If you’ve ever wondered whether the food on your plate could shape your brain’s future, the science is starting to say: yes, it might. While healthy eating has long been linked to better brain health, new research is getting more specific about which diets help, and when you should start following them.At this year’s annual Nutrition conference in Orlando, Florida, researchers presented findings that add weight to the growing link between diet and dementia. According to a news release, study author Song-Yi Park of the University of Hawaii at Manoa said, “Our study findings confirm that healthy dietary patterns in mid to late life and their improvement over time may prevent Alzheimer’s and related dementias. This suggests that it is never too late to adopt a healthy diet to prevent dementia.”The research focused on nearly 93,000 U.S. adults from the long-running Multiethnic Cohort Study. Participants were between 45 years and 75 years old when they entered the study in the 1990s. Over time, more than 21,000 developed Alzheimer’s disease or related dementias — but those who closely followed a specific eating plan, the MIND diet, were significantly less likely to be among them.Combining the Mediterranean Diet and DASH DietThe MIND diet (short for Mediterranean-DASH Intervention for Neurodegenerative Delay) blends the best elements of two established eating plans: the Mediterranean diet and the DASH diet.The Mediterranean diet is inspired by the traditional cuisines of countries like Greece, Italy, and Spain. It focuses on plant-based foods (fruits, vegetables, legumes, nuts, seeds, and whole grains), healthy fats like olive oil, and moderate amounts of fish, poultry, and dairy, with red meat eaten sparingly. It’s been linked to a lower risk of heart disease and is also environmentally friendly.The DASH diet, originally designed to lower blood pressure, shares many similarities but puts extra emphasis on limiting sodium and increasing intake of nutrients like potassium, magnesium, and calcium. It includes low-fat dairy and lean protein sources and doesn’t rely on any hard-to-find foods.The MIND diet specifically promotes brain-healthy foods like leafy greens, berries, nuts, and olive oil, combining benefits of both approaches with a focus on protecting cognitive health.Read More: Is the Mediterranean Diet Healthy?The MIND Diet Over TimeAccording to Park and her team, people who scored highest in MIND diet adherence at the study’s start had a 9 percent lower risk of developing dementia. That number was even higher with around 13 percent for African American, Latino, and White participants. Looking at those who improved their adherence to the MIND diet over time, showed a 25 percent reduction in dementia risk compared to those whose dietary habits declined, which was consistent no matter the age or racial background.“We found that the protective relationship between a healthy diet and dementia was more pronounced among African Americans, Latinos, and Whites, while it was not as apparent among Asian Americans and showed a weaker trend in Native Hawaiians,” Park said in the press release. “A tailored approach may be needed when evaluating different subpopulations’ diet quality.”Interestingly, Asian Americans also tend to have lower dementia rates overall, which researchers believe could mean other cultural eating patterns might offer similar protection than the MIND diet for that group.The Best Time to Start Is NowOne of the most encouraging findings was that starting late still helped. Participants who began following the MIND diet more closely over a 10-year period, regardless of how old they were when they began, saw benefits. This suggests that even if you didn’t grow up eating brain-boosting foods, it’s not too late to change course.It’s worth noting that the study is observational, so, by itself, it can’t prove this specific diet causes better brain health. Study author Park notes that the next step is conducting interventional studies to verify these promising results.Still, the evidence is mounting. Whether you're 45 or 75, choosing greens over greasy snacks could make a real difference when it comes to aging with or without dementia.This article is not offering medical advice and should be used for informational purposes only.Article SourcesOur writers at Discovermagazine.com use peer-reviewed studies and high-quality sources for our articles, and our editors review for scientific accuracy and editorial standards. Review the sources used below for this article:National Institute of Aging. What Do We Know About Diet and Prevention of Alzheimer’s Disease?Harvard Health Publishing. A practical guide to the Mediterranean dietNational Heart, Lung, and Blood Institute. Following the DASH Eating PlanHaving worked as a biomedical research assistant in labs across three countries, Jenny excels at translating complex scientific concepts – ranging from medical breakthroughs and pharmacological discoveries to the latest in nutrition – into engaging, accessible content. Her interests extend to topics such as human evolution, psychology, and quirky animal stories. When she’s not immersed in a popular science book, you’ll find her catching waves or cruising around Vancouver Island on her longboard.

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/May 30, 2025/4:28 p.m. ETTrump Attacks Harvard With Social Media Screening for All VisasThis pilot program will soon be expanded across the country.Spencer Platt/Getty ImagesThe Trump administration has begun carrying out its expanded vetting for student visa applicants, surveilling their social media accounts to make sure they aren’t posting anything in support of Palestine, which the administration considers antisemitic. This vetting will start with Harvard visa applicants but is expected to be adopted nationwide.Secretary of Stato Marco Rubio sent a cable to all U.S. embassies and consulates on Thursday ordering them to “conduct a complete screening of the online presence of any nonimmigrant visa applicant seeking to travel to Harvard University for any purpose.” That would apply not just to students but also to faculty, staff, and researchers visiting the university.The Trump administration is taking particular interest in people who have their social media accounts on “private,” an obvious, ominous crossing of boundaries.The State Department has ordered officers to examine “whether the lack of any online presence, or having social media accounts restricted to ‘private’ or with limited visibility, may be reflective of evasiveness and call into question the applicant’s credibility.”This is yet another instance of Harvard serving as a test subject for the administration’s larger crackdown on free speech and international students at American universities. Trump has already revoked billions of dollars in research funding from the Massachusetts school, and even banned it from admitting any international students at all, although the latter policy was temporarily revoked by a judge. Most Recent Post/May 30, 2025/3:53 p.m. ETStephen Miller Grilled on Musk’s Drug Use as Wife Lands New GigTrump’s chief adviser seems desperate to avoid questions on Elon Musk. Does that have anything to do with his wife’s new job? Francis Chung/Politico/Bloomberg/Getty ImagesStephen Miller had a dismissive response Friday to new reports of Elon Musk’s drug use during Trump’s campaign last year. CNN’s Pamela Brown asked the far-right Trump adviser if there was “any drug testing or requests for him to drug test when he was in the White House given the fact that he was also a contractor with the government.”  A chuckling Miller ignored the question and said, “Fortunately for you and all of the friends at CNN, you’ll have the opportunity to ask Elon all the questions you want today yourself,” before he then segued into the Trump administration’s anti-immigrant agenda. “The drugs I’m concerned about are the drugs that are coming across the border from the criminal cartels that are killing hundreds of thousands of Americans,” Miller said. Perhaps Miller laughed instead of answering because his wife, Katie Miller, has left her job as adviser and spokesperson for the Department of Government Efficiency to work full-time for Musk and his companies. Miller has probably had enough of Musk, as he has also been subtweeting the tech oligarch, trying to refute Musk’s criticisms that the Republican budget bill would raise the deficit. “The Big Beautiful Bill is NOT an annual budget bill and does not fund the departments of government. It does not finance our agencies or federal programs,” Miller said, in a long X post earlier this week. Is there bad blood between Miller and Musk that has now spiraled because Miller’s wife is working for the tech oligarch and fellow fascism enthusiast? Most Recent Post/May 30, 2025/3:19 p.m. ETOld Man Trump Repeatedly Fumbles in Weird Speech Praising Elon MuskDonald Trump couldn’t keep some of his words straight as he marked the supposed end of Elon Musk’s tenure at the White House.Kevin Dietsch/Getty ImagesHours after reports emerged Friday that Elon Musk had been under the influence of heavy drugs during his time advising the president, Musk and Donald Trump stumbled and fumbled their way through a White House press conference recognizing the end of the tech billionaire’s special government employee status.The wildly unusual joint conference featured Musk’s black eye, a giant gold key that Trump said he only gives to “very special people,” cringe-worthy regurgitations by Musk of Trump’s take on his Pulitzer Board defamation suit, and claims that Musk’s unpopular and controversial time in the White House was not quite over.But as Trump continued to praise Musk and his time atop the Department of Government Efficiency, the president’s verbal gaffes became more apparent. He claimed that DOGE had uncovered $42 million in wasteful spending, referring to expenditures related to Uganda, which Trump pronounced as “oo-ganda.” The 78-year-old also mentioned he would have Musk’s DOGE cuts “cauterized by Congress,” though he quickly corrected himself by saying they would be “affirmed by Congress,” instead. Trump’s on-camera slippage has gotten worse in recent weeks: Earlier this month, Trump dozed off while in a meeting with Crown Prince Mohammed bin Salman in Riyadh, Saudi Arabia. That is despite the fact that the president received a clean bill of health in a medical report released in April that described Trump as being in “excellent health,” including neurological functioning.Musk, meanwhile, refused to acknowledge emerging reports of his alleged drug use. But the news of White House drug use under Trump’s helm is nothing new: In fact, if the reports prove true, it would be little more than a return to form. Last year, a report by the Department of Defense inspector general indicated that the West Wing operated more like a pill mill than the nation’s highest office. Common pills included modafinil, Adderall, fentanyl, morphine, and ketamine, according to the Pentagon report. But other, unlisted drugs—like Xanax—were equally easy to come by from the White House Medical Unit, according to anonymous sources that spoke to Rolling Stone.While other presidents were known to take a mix of drug cocktails to fight off back pain (like JFK) or bad moods (like Nixon), no previous administrations matched the level of debauchery of Trump’s, whose in-office pharmacists unquestioningly handed out highly addictive substances to staffers who needed pick-me-ups or energy boosts—no doctor’s exam, referral, or prescription required.“It was kind of like the Wild West. Things were pretty loose. Whatever someone needs, we were going to fill this,” another source told Rolling Stone in March 2024.Meanwhile, pharmacists described an atmosphere of fear within the West Wing, claiming they would be “fired” if they spoke out or would receive negative work assignments if they didn’t hand pills over to staffers.Read more about the press conference:Trump and Elon Musk Have Ominous Warning About Future of DOGEMost Recent Post/May 30, 2025/3:00 p.m. ETElon Musk Gives Strange Excuse for Massive Black EyeMusk showed up a press conference with Donald Trump sporting a noticeable shiner.Kevin Dietsch/Getty ImagesElon Musk sported what looked like a black eye during his DOGE goodbye press conference with President Trump on Friday. When asked about it, he blamed the bruise on his 5-year-old son punching him in the face. “Mr. Musk … is your eye OK? What happened to your eye; I noticed there’s a bruise there?” one reporter finally asked near the end of the press conference.“Well, I wasn’t anywhere near France,” Musk said, in a weak attempt at a joke regarding footage of French President Emmanuel Macron’s wife slapping him in the face.“I was just horsing around with [my son] little X and said, ‘Go ’head and punch me in the face,’ and he did. Turns out even a 5-year-old punching you in the face actually does—”“That was X that did it? X could do it!” Trump chimed in. “If you knew X …”“I didn’t really feel much at the time; I guess it bruises up. But I was just messing around with the kids.”Musk chose an impeccable time to show up to a press conference with a black eye. Earlier in the day, The New York Times reported on Musk’s rampant drug use on and off the campaign trail, as the world’s richest man frequently mixed ketamine and psychedelics and kept a small box of pills, mostly containing Adderall. The shiner only adds to speculation around his personal habits.More on that Times report:Elon Musk Was on Crazy Combo of Drugs During Trump CampaignMost Recent Post/May 30, 2025/2:51 p.m. ETTrump and Elon Musk Have Ominous Warning About Future of DOGEElon Musk’s time as a government employee has come to an end, but his time with Donald Trump has not.Kevin Dietsch/Getty ImagesDespite the fanfare over Elon Musk’s supposed departure from the Department of Government Efficiency, Donald Trump says that the billionaire bureaucrat isn’t really going anywhere.“Many of the DOGE people are staying behind, so they’re not leaving. And Elon’s not really leaving. He’s gonna be back and forth, I think. I have a feeling. It’s his baby, and he’s gonna be doing a lot of things,” Trump said during a press conference in the Oval Office Friday.The press conference was held to mark the end of Musk’s time as a so-called “special government employee,” a title that allowed him to bypass certain ethics requirements during his 134-day stint in Trump’s administration. The president made sure to give Musk a gaudy golden key—what it actually unlocks went totally unaddressed—to make sure he could get back into the White House. “This is not the end of DOGE, but really the beginning,” Musk said, promising that DOGE’s “influence” would “only grow stronger” over time.Earlier Friday, the billionaire bureaucrat shared a post on X asserting that the legacy of DOGE was more psychological than anything else. Surely, it will take longer than four months to forget the image of Musk running around with a chainsaw. Read more about Musk:Elon Musk Was on Crazy Combo of Drugs During Trump CampaignMost Recent Post/May 30, 2025/1:21 p.m. ETDem Governor Vetoes Ban on Surprise Ambulance Bills in Shocking MoveThe bill had unanimous support in both chambers of the state legislature.Michael Ciaglo/Getty ImagesColorado’s Democratic Governor Jared Polis has vetoed a bill that would ban surprise billing by ambulance companies, over the unanimous objections of both chambers of the state legislature. Why would Polis veto a bill that’s popular with everyone, even Colorado Republicans? The governor wrote in his veto statement that drafting errors in the bill made it “unimplementable” and estimated that it would make insurance premiums go up by as much as $0.73 to $2.15 per person. “I am committed to working with proponents and sponsors to protect Coloradans from surprise bills, but I encourage all parties to work towards a more reasonable reimbursement rate that mitigates premium impacts and nets a better deal for Colorado families,” Polis wrote. In Colorado, if legislators in both chambers repass the bill with a two-thirds majority, they can override the governor’s veto, especially considering that the bill passed with the support of every single legislator. But the legislature adjourned on May 7, meaning that the bill has to be passed again when the legislature reconvenes in January.  For some reason, ending surprise ambulance billing nationally is not the slam-dunk issue it should be. Congress ended most surprise medical bills in 2020 but exempted ground ambulances from the bill. Was Polis’s veto due to badly drafted language and a (seemingly modest) price hike in insurance premiums, as he said, or was it for a different, more nefarious reason? We might not know unless and until the bill is reintroduced next year. More on surprise ambulance bills:Congress Doesn’t Care About Your Surprise Ambulance Bill Most Recent Post/May 30, 2025/12:21 p.m. ETTrump’s Pardons Since Jan 6 Spree Show an Infuriatingly Corrupt TrendSince his January 6 pardon spree, Donald Trump has tended to grant clemency a little closer to home.Saul Loeb/AFP/Getty ImagesA good chunk of the white-collar criminals pardoned by Donald Trump after his massive “Day One” pardoning spree either have a political or financial tie to him.The president has issued 60 pardons since he offered political forgiveness to some 1,600 individuals charged in the January 6, 2021, attack on the U.S. Capitol. But out of those subsequent 60 unrelated to the attack, 12 people—or roughly one in five—were already in Trump’s orbit, according to ABC News.They included several politicos, including former Illinois Governor Rod Blagojevich, who was convicted on several counts of corruption, including for an attempt to sell Barack Obama’s Senate seat after he left the position for the White House; former Republican Representative Michael Grimm, who pleaded guilty to tax fraud; former Nevada gubernatorial candidate Michele Fiore, who allegedly stole public funds intended to commemorate a slain police officer; and former Tennessee state Senator Brian Kelsey, who pleaded guilty to campaign finance fraud in 2022.Trump also pardoned major financiers of his presidential campaigns. Trevor Milton, the founder of the Nikola electric vehicle company, donated nearly $2 million toward Trump’s 2024 campaign. Imaad Zuberi, who has donated to both parties, issued “at least $800,000 to committees associated with Trump and the Republican Party,” ABC reported.Others helped Trump advance his retribution campaign against his political enemies, or helped advance his own image in the broader Republican Party. Devon Archer and Jason Galanis, both former business partners of Hunter Biden, accused the younger Biden of leveraging his father’s name and influence in order to conduct business overseas. Archer had defrauded a Native American tribal entity, while Galanis was serving time for multiple offenses. Trump also forgave Todd and Julie Chrisley—reality TV stars known for their show Chrisley Knows Best who were sentenced to a combined 19 years on fraud and tax evasion charges—after their daughter Savannah Chrisley spoke at the 2024 Republican National Convention.Speaking to press Friday after her parents’ release, Savannah Chrisley said that the “biggest misconception right now is I either paid for a pardon or slept for a pardon—,” but she couldn’t finish her sentence before Todd interjected: “That’s something I would have done,” he said.Read who else Trump is thinking of pardoning:Trump Considering Pardons for Men Who Tried to Kill Gretchen WhitmerMost Recent Post/May 30, 2025/12:04 p.m. ETTrump Knew He Was Deporting Innocent People to El Salvador All AlongMany of the people deported to El Salvador have no criminal record, and Donald Trump knew it.Michael M. Santiago/Getty ImagesDonald Trump’s administration was well aware that many of the 238 Venezuelan immigrants it shipped off to a notorious megaprison in El Salvador had no criminal records at all, according to a Friday report from ProPublica.  While Trump officials claimed that the deportees were brutal gang members and “the worst of the worst,” only 32 of the deportees had actually been convicted of crimes, and most of them were minor offenses such as traffic violations, according to data from the Department of Homeland Security reviewed by ProPublica, The Texas Tribune, and a team of journalists from Venezuelan media outlets. One of the men, 23-year-old Maikol Gabriel López Lizano, faced a misdemeanor charge after he was arrested in 2023 for riding his bike and drinking a can of beer.Little more than half of the deportees, 130 of the 238, were charged only with violating U.S. immigration laws. Twenty of them had criminal records from other countries. The U.S. government data showed that 67 individuals had pending charges, with only six being for violent crimes. In several cases, the government data about the pending charges differed from what ProPublica was able to find. In some cases, the men had actually been convicted, and in one, the charges had been dropped. But in many cases, these individuals were remanded to a foreign prison before their criminal cases were ever resolved. The Trump administration has touted allegations of gang affiliation as a justification for denying the deportees their due process rights. But none of the men’s names appeared on a list of roughly 1,400 alleged Tren de Aragua members kept by the Venezuelan government, ProPublica reported. Trump’s border czar Tom Homan tried desperately in March to downplay reporting that many of these individuals did not have criminal records. “A lot of gang members don’t have criminal histories, just like a lot of terrorists in this world, they’re not in any terrorist databases, right?” Homan said on ABC News. But the methods the government relies on to classify individuals as gang members—such as identification of gang-affiliated tattoos—have been disproven by experts. Not only were many of the men who were deported not proven gang members, they weren’t even criminals, and by denying them the right to due process, they were remanded to a foreign prison notorious for human rights abuses without ever getting to prove it. Trump has continued to pressure the Supreme Court to allow him to sidestep due process as part of his massive deportation campaign, claiming that the judiciary has no right to intrude on matters of “foreign policy.” But immigrants residing on U.S. soil—who are clearly not the bloodthirsty criminals the administration insists they are—are still subject to protections under U.S. law. Read more about the deportations:Trump Asks Supreme Court to Help Him Deport People Wherever He WantsMost Recent Post/May 30, 2025/11:41 a.m. ETJoni Ernst Stoops to Shocking Low When Told Medicaid Cuts Will KillSenator Joni Ernst had a disgusting answer when confronted by a constituent at her town hall about Trump’s budget bill.Drew Angerer/Getty ImagesRepublican Senator Joni Ernst had a particularly unhinged response to questions from her constituents at a town hall in Parkersburg, Iowa, on Friday.Ernst was asked about the GOP’s budget bill kicking people off of Medicaid, and her condescending answer quickly became callous and flippant as the Iowa politician smirked at the audience.“When you are arguing about illegals that are receiving Medicaid, 1.4 million, they’re not eligible, so they will be coming off, so—” Ernst began, before an audience member shouted, “People are going to die!”“People are not—well, we all are going to die,” Ernst responded, as the audience drowned her in loud protests.What was Ernst thinking with that answer? Almost every Republican town hall this year has gone badly for the politician holding it, thanks to President Trump upending the federal government, and Ernst surely knew that choosing death over Medicaid wouldn’t go over well with the crowd. Earlier this week in Nebraska, Representative Mike Flood was heckled after he admitted that he didn’t read the budget bill.Ersnt’s town hall wasn’t even the first one in Iowa to go badly for a Republican. On Wednesday, Representative Ashley Hinson was met with jeers and boos, with audience members in Decorah, Iowa calling her a fraud and a liar. But at least Hinson had the good sense not to seemingly embrace death over a vital, lifesaving government program. More on Trump’s bill:Here Are the Worst Things in Trump’s Big, Beautiful Bill Most Recent Post/May 30, 2025/11:35 a.m. ETKetanji Brown Jackson Blasts “Botched” Supreme Court Ruling on TPSSupreme Court Justice Ketanji Brown Jackson, in a scathing disssent, called out the rest of the court for allowing Trump’s harmful executive order to stand.Anna Moneymaker/Getty ImagesSupreme Court Justice Ketanji Brown Jackson thinks the Supreme Court “botched” a decision to allow the Trump administration to revoke the Temporary Protected Status protections of about 500,000 Haitian, Cuban, Nicaraguan, and Venezuelan immigrants.Jackson and fellow liberal Justice Sonia Sotomayor were the only two dissenters.“The Court has plainly botched this assessment today. It requires next to nothing from the Government with respect to irreparable harm,” Jackson wrote in the dissent. “And it undervalues the devastating consequences of allowing the Government to precipitously upend the lives of and livelihoods of nearly half a million noncitizens while their legal claims are pending.”TPS is a long-standing program that allowed those 500,000 immigrants to stay in the U.S. after they fled violence and risk in their home countries. After the Supreme Court’s ruling, all of them are at high risk of sudden deportation. “It is apparent that the government seeks a stay to enable it to inflict maximum predecision damage,” Jackson wrote.Read the full dissent here.View More Posts

We may earn a commission from links on this page.Purchasing a full set of individual dumbbell pairs between five and 60 pounds can cost well over $1,500, not to mention how much space you'd have to dedicate to storing them. That's why I'm a huge fan of adjustable dumbbells like the REP QuickDraws or Nüobells, which I reviewed here and here, respectively. If you know you want to be able to up to 60 pounds at five-pound increments, effectively combining 30 weights into one compact set, then adjustables like the REP QuickDraws are how you can save significant money and space in your home gym equipment setup. But let's say your strength progresses beyond your adjustable dumbbells' capacity. First of all: Nice work. Secondly: What do you do now? I've seen users on Reddit directly asking "what's stopping me from adding more plates to keep going heavier?" Adding extra weight plates seems like a logical solution, as opposed to spending all that money on an entirely new set for just a few pounds beyond the recommended capacity. So, let's take a look at what is stopping you—and what's not. Here's what you should know about using add-on weights to your adjustable dumbbells, from what is officially considered unsafe to why it gets impractical even aside from that. How to add weight to your adjustable dumbbellsFirst off, not all adjustable dumbbells allow for this type of modification. Selector pin systems (like PowerBlocks) generally don't allow for unofficial weight additions due to their enclosed design. Dial systems (like my favorite, the Nüobells) have security features specifically preventing modifications outside the cradle. Then you have spin-lock dumbbells, like the QuickDraws, which allow for customization and additional weight outside the cradle. For this reason, I'll be speaking to the REP QuickDraws specifically, as opposed to Nüobells or Powerblocks.Still, adding weight beyond the manufacturer's specifications will almost certainly void your warranty. REP Fitness designed these dumbbells for specific weight ranges and cannot guarantee safety beyond those limits. I spoke with a REP representative (REP-resentative?) who informed me, "internal testing was not conducted beyond the 60 pound maximum, so REP cannot guarantee the safety of additional weight beyond that."Outside of your warranty, there are safety concerns. The handles, locking mechanisms, and materials are engineered for specific maximum loads. Exceeding these limits risks equipment failure and potential injury. Even if the dumbbells can technically handle the additional plates, the result might be bulky and awkward, affecting your form and increasing injury risk.All that being said, it still is entirely feasible to bend the rules and take your 60-pound dumbbells up to 70 pounds. Assuming you play it safe and only add a few plates to each side, here's what you should know:Only add compatible plates: The QuickDraw system uses standard plate dimensions that can be supplemented with additional compatible plates.Manual addition required: You'll need to add these plates manually outside the cradle system, as the selection mechanism only works within the advertised weight range. This pretty much negates the whole "quick draw" appeal.Secure them properly: Ensure the additional plates are secured with the locking mechanism to prevent dangerous slippage during exercises.Manual tracking required: The dial indicator becomes inaccurate once you exceed the designed range. You'll need to manually calculate and track the added weight.Can you (and should you) add more weight to REP QuickDraw Dumbbells?The short answer: Yes, technically you can add additional weight plates to REP QuickDraw dumbbells beyond their advertised maximum. The long answer: Just because something is possible doesn't mean you should make a habit of it. Sure, it's fully above-board to order add-on weights in five-pound increments (which, side-note, I love so much more than a 10-pound jump). However, going beyond 60 pounds isn't sanctioned by REP. For this reason, I naturally had my boyfriend test my DIY super-QuickDraws creation. In the image below, you can see how I manually added weights outside of the cradle. With the spin-locks, you can keep adding weights outside the cradle without any resistance. Just slide the weights on and flip the lock switch.I snapped a picture of it in its lopsided form, so you can see just how far outside the cradle the five-pound add-ons will go—and how precarious it starts to look right off the bat. Behold, my DIY super-QuickDraws creation. Credit: Meredith Dietz As we steadily increased the weight from 65, to 70, to 85 pounds, he noted growing concerns with how much the dumbbells could handle while still feeling safe. The all-steel design gives these guys a premium feel during standard use. But when you go beyond the sanctioned weight capacity, there's a sense that the dumbbells wouldn't bend or snag, but simply snap. And again, you'll need to manually keep track of how much weight you're adding, since the individual plates are not labeled, and you're exceeding the labels of the cradle. That mental math might not be a deterrent for you, but it's something to note.The bottom lineIn most cases, the hassle and safety concerns outweigh the benefits. The primary advantage of the QuickDraws—quick, convenient weight changes—is totally undermined when manually adding plates.Investing in a higher-capacity adjustable dumbbell set (like 80- to 90-pound models) or supplementing with specific heavier fixed dumbbells for certain exercises might be safer and more practical. For serious lifters approaching the upper limits of their adjustable dumbbells, I'd recommend supplementing with individual heavier dumbbells.

Fresh fava–also called faba–beans in Spain. The season for harvesting fresh faba beans in this region lasts from September into November. CREDIT: Carlos Castro/Europa Press via Getty Images. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Beef production is a significant source of planet-warming greenhouse gasses, and its land use often leads to deforestation. Plant-based food products are thus widely considered to be a more sustainable alternative. But there’s one problem: to most people, they don’t taste nearly as good as a juicy ribeye steak.  In particular, people don’t like fava beans (also called faba beans) because of their bitterness and the dry sensation they cause in the mouth, according to a Finnish consumer study reported by the University of Helsinki.The legume, however, has incredible potential. It’s highly nutritious and provides a great source of amino acids. What’s more, dried faba beans have more protein than red meat, and some studies have even suggested that eating them improves the motor skills of patients with Parkinson’s disease. “People avoid faba beans in cooking and in the food industry especially because of their bitterness. In their current form, faba bean products have not sold very well either,” Fabio Tuccillo, a sensory and consumer scientist conducting his doctoral research at the University of Helsinki, explained in a statement. “They are often also heavily seasoned to cover the bitter taste. Therefore, it is important to identify the compounds that cause unpleasant flavours.”  [ Related: A new ingredient could revolutionize white bread. ] The idea is that if scientists discover the compounds behind these flavors, they can modify them through new technologies, processing methods, and even plant-breeding approaches to make fava beans a better-tasting ingredient for plant-based foods. In this spirit, Tuccillo reveals in his doctoral thesis that the bitterness and mouth-drying feeling is associated with compounds called vicine and convicine, in addition to several amino acids including phenylalanine, according to the university. He also identified compounds responsible for the beans’ cereal-like smell.  Fava beans “can be used in a diverse range of food products, such as bread, pastry and other products. Once we know how to reduce the unpleasant flavour and sensation, we can produce increasingly pleasant faba bean raw materials,” explained Tuccillo, who is defending his doctoral thesis today. “Improving the sensory quality of raw materials made from faba beans is necessary, if the aim is to succeed in the food market with products supporting sustainable development and plant-based diets.”  Perhaps we’ll all be enjoying delicious fava bread sooner than you think. 

Greg Petronzi is a psychologist and a watchmaker. True Patina 2025-05-31T09:50:02Z Save Saved Read in app This story is available exclusively to Business Insider subscribers. Become an Insider and start reading now. Have an account? Greg Petronzi was a psychologist and professor when he got into watchmaking on the side. Now he repairs vintage Rolex watches and works on pieces worth six figures. Petronzi said his watchmaking out-earns his work in psychology. This as-told-to essay is based on a conversation with Greg Petronzi of True Patina, a watchmaker specializing in vintage Rolex repairs. He is also a licensed psychologist and professor at New York University. This interview has been edited for length and clarity.I've always had a fascination with watches, starting at a young age. Around middle school, I had a Swatch with a see-through plastic case and an automatic movement. You could see all of the parts of the watch as it was working, and I always found that so interesting.In college, I pursued psychology. That was my practical career path. I got a master's and a Ph.D. Overall, it was a 12-year path to becoming a licensed psychologist. But I never lost my interest in watches.After I finished school, I got into watchmaking, which ended up becoming my main gig. Psychology became my part-time gig, which I never anticipated happening, but it's super exciting. I love both disciplines.I got into watchmaking with an informal apprenticeshipWatchmaking was never really on my radar. As a grad student, I started getting involved in the world of watches and meeting other watch enthusiasts through forums and meetups.I made friends with a watchmaker out of Florida named Rik Dietel, who has 35-plus years of experience in watchmaking and specifically with vintage Rolex, which is the niche that I was very passionate about. I started asking him how to fix this or change that on my own watches. Little by little, Rik started teaching me, and it turned into an informal, remote apprenticeship.Over the next several years, while I was working as a psychologist and professor, my skillset started to really develop, and it started to become apparent to me that this might be more than just a hobby. I was working on my own stuff, then friends' watches, then friends of friends' watches. Then I started getting requests from people I didn't know. That's when I said, "I'd better take this a bit more seriously." Greg Petronzi in his workshop. True Patina During the pandemic, my psychology work went remote, and I was able to put more time and energy into watchmaking. I also had an income, which helped me afford the tools. I just recently spent about $15,000 on one tool to do a very nuanced repair.I built up my watchmaking workshop and started to develop a niche in cosmetic repair — dials and hands. Because I started as a watch collector, I understand the importance of preserving the originality of a watch. While a lot of more modern watchmakers have the disposition of "repair and replace," I have the disposition of "restore and retain."I started to showcase my work on Instagram and build trust in the community. I ended up working with some really important watch collectors and dealers, like Eric Wind of Wind Vintage, and auction houses like Phillips.There was a moment when I realized I'd made a name for myself in the watch world: Someone sent me an eBay listing that said, "Watch just serviced by True Patina." I had no idea who the seller was, but I thought, "Wow, my company name is actually carrying so much weight that people are using this as a flex toward selling their watch." That felt really good. Watchmaking can be challenging to get into, but it's really rewardingWatchmaking has more often than not outperformed what the Ph.D and psychology have allowed me to earn, which I'm astounded by and grateful for.If someone's interested in learning watchmaking, I'd say it's possible, but there are some challenges. The tools are expensive, and the formal education options are limited. Most people either find an apprenticeship or start by working for an established brand while slowly building up their own workshop.My pricing varies a lot based on how much restoration is needed. Repairs typically range between $1,000 and $2,000, but some go up to $6,000 or more, especially if a rare part needs to be sourced.I service watches that range in price from a few thousand dollars upward to six-figure watches. It's not uncommon for me to work on a watch that costs $200,000 and occasionally even up to $500,000. Most commonly, they are a few thousand up to $20,000. But what's most meaningful to me is working on sentimental pieces — watches that have been in families for generations.Becoming a watchmaker never crossed my mind as a kid or even as a college student. But all of a sudden, it organically became reality for me, and it's a very, very meaningful and enjoyable existence.Watchmaking is a very rewarding field. It can be very stressful, especially when the repair might not be cooperating the way you want it to, but when things do fall in line, it can be a very mindful activity. You get into this flow where time just sort of ceases. It's kind of ironic.Do you have a story to share about watches or watchmaking? Contact this reporter at kvlamis@businessinsider.com.

The probability of any American having dementia in their lifetime may be far greater than previously thought. For instance, a 2025 study that tracked a large sample of American adults across more than three decades found that their average likelihood of developing dementia between ages 55 to 95 was 42%, and that figure was even higher among women, Black adults and those with genetic risk. Now, a great deal of attention is being paid to how to stave off cognitive decline in the aging American population. But what is often missing from this conversation is the role that chronic stress can play in how well people age from a cognitive standpoint, as well as everybody’s risk for dementia. We are professors at Penn State in the Center for Healthy Aging, with expertise in health psychology and neuropsychology. We study the pathways by which chronic psychological stress influences the risk of dementia and how it influences the ability to stay healthy as people age. Recent research shows that Americans who are currently middle-aged or older report experiencing more frequent stressful events than previous generations. A key driver behind this increase appears to be rising economic and job insecurity, especially in the wake of the 2007-2009 Great Recession and ongoing shifts in the labor market. Many people stay in the workforce longer due to financial necessity, as Americans are living longer and face greater challenges covering basic expenses in later life. Therefore, it may be more important than ever to understand the pathways by which stress influences cognitive aging. Social isolation and stress Although everyone experiences some stress in daily life, some people experience stress that is more intense, persistent or prolonged. It is this relatively chronic stress that is most consistently linked with poorer health. In a recent review paper, our team summarized how chronic stress is a hidden but powerful factor underlying cognitive aging, or the speed at which your cognitive performance slows down with age. It is hard to overstate the impact of stress on your cognitive health as you age. This is in part because your psychological, behavioral and biological responses to everyday stressful events are closely intertwined, and each can amplify and interact with the other. For instance, living alone can be stressful—particularly for older adults—and being isolated makes it more difficult to live a healthy lifestyle, as well as to detect and get help for signs of cognitive decline. Moreover, stressful experiences—and your reactions to them—can make it harder to sleep well and to engage in other healthy behaviors, like getting enough exercise and maintaining a healthy diet. In turn, insufficient sleep and a lack of physical activity can make it harder to cope with stressful experiences. Stress is often missing from dementia prevention efforts A robust body of research highlights the importance of at least 14 different factors that relate to your risk of Alzheimer’s disease, a common and devastating form of dementia and other forms of dementia. Although some of these factors may be outside of your control, such as diabetes or depression, many of these factors involve things that people do, such as physical activity, healthy eating and social engagement. What is less well-recognized is that chronic stress is intimately interwoven with all of these factors that relate to dementia risk. Our work and research by others that we reviewed in our recent paper demonstrate that chronic stress can affect brain function and physiology, influence mood and make it harder to maintain healthy habits. Yet, dementia prevention efforts rarely address stress. Avoiding stressful events and difficult life circumstances is typically not an option. Where and how you live and work plays a major role in how much stress you experience. For example, people with lower incomes, less education or those living in disadvantaged neighborhoods often face more frequent stress and have fewer forms of support—such as nearby clinics, access to healthy food, reliable transportation or safe places to exercise or socialize—to help them manage the challenges of aging As shown in recent work on brain health in rural and underserved communities, these conditions can shape whether people have the chance to stay healthy as they age. Over time, the effects of stress tend to build up, wearing down the body’s systems and shaping long-term emotional and social habits. Lifestyle changes to manage stress and lessen dementia risk The good news is that there are multiple things that can be done to slow or prevent dementia, and our review suggests that these can be enhanced if the role of stress is better understood. Whether you are a young, midlife or an older adult, it is not too early or too late to address the implications of stress on brain health and aging. Here are a few ways you can take direct actions to help manage your level of stress: Follow lifestyle behaviors that can improve healthy aging. These include: following a healthy diet, engaging in physical activity and getting enough sleep. Even small changes in these domains can make a big difference. Prioritize your mental health and well-being to the extent you can. Things as simple as talking about your worries, asking for support from friends and family and going outside regularly can be immensely valuable. If your doctor says that you or someone you care about should follow a new health care regimen, or suggests there are signs of cognitive impairment, ask them what support or advice they have for managing related stress. If you or a loved one feel socially isolated, consider how small shifts could make a difference. For instance, research suggests that adding just one extra interaction a day—even if it’s a text message or a brief phone call—can be helpful, and that even interactions with people you don’t know well, such as at a coffee shop or doctor’s office, can have meaningful benefits. Walkable neighborhoods, lifelong learning A 2025 study identified stress as one of 17 overlapping factors that affect the odds of developing any brain disease, including stroke, late-life depression and dementia. This work suggests that addressing stress and overlapping issues such as loneliness may have additional health benefits as well. However, not all individuals or families are able to make big changes on their own. Research suggests that community-level and workplace interventions can reduce the risk of dementia. For example, safe and walkable neighborhoods and opportunities for social connection and lifelong learning—such as through community classes and events—have the potential to reduce stress and promote brain health. Importantly, researchers have estimated that even a modest delay in disease onset of Alzheimer’s would save hundreds of thousands of dollars for every American affected. Thus, providing incentives to companies who offer stress management resources could ultimately save money as well as help people age more healthfully. In addition, stress related to the stigma around mental health and aging can discourage people from seeking support that would benefit them. Even just thinking about your risk of dementia can be stressful in itself. Things can be done about this, too. For instance, normalizing the use of hearing aids and integrating reports of perceived memory and mental health issues into routine primary care and workplace wellness programs could encourage people to engage with preventive services earlier. Although research on potential biomedical treatments is ongoing and important, there is currently no cure for Alzheimer’s disease. However, if interventions aimed at reducing stress were prioritized in guidelines for dementia prevention, the benefits could be far-reaching, resulting in both delayed disease onset and improved quality of life for millions of people. Jennifer E. Graham-Engeland is a professor of biobehavioral health at Penn State. Martin J. Sliwinski is a professor of human development and family studies at Penn State. This article is republished from The Conversation under a Creative Commons license. Read the original article.

Male fertility rates have been plummeting over the past half-century. An analysis from 1992 noted a steady decrease in sperm counts and quality since the 1940s. A more recent study found that male infertility rates increased nearly 80% from 1990 to 2019. The reasons driving this trend remain a mystery, but frequently cited culprits include obesity, poor diet, and environmental toxins. Infectious diseases such as gonorrhea or chlamydia are often overlooked factors that affect fertility in men. Accumulating evidence suggests that a common single-celled parasite called Toxoplasma gondii may also be a contributor: An April 2025 study showed for the first time that “human sperm lose their heads upon direct contact” with the parasite. I am a microbiologist, and my lab studies Toxoplasma. This new study bolsters emerging findings that underscore the importance of preventing this parasitic infection. The many ways you can get toxoplasmosis Infected cats defecate Toxoplasma eggs into the litter box, garden or other places in the environment where they can be picked up by humans or other animals. Water, shellfish and unwashed fruits and vegetables can also harbor infectious parasite eggs. In addition to eggs, tissue cysts present in the meat of warm-blooded animals can spread toxoplasmosis as well if they are not destroyed by cooking to proper temperature. While most hosts of the parasite can control the initial infection with few if any symptoms, Toxoplasma remains in the body for life as dormant cysts in brain, heart and muscle tissue. These cysts can reactivate and cause additional episodes of severe illness that damage critical organ systems. Between 30% and 50% of the world’s population is permanently infected with Toxoplasma due to the many ways the parasite can spread. Toxoplasma can target male reproductive organs Upon infection, Toxoplasma spreads to virtually every organ and skeletal muscle. Evidence that Toxoplasma can also target human male reproductive organs first surfaced during the height of the AIDS pandemic in the 1980s, when some patients presented with the parasitic infection in their testes. While immunocompromised patients are most at risk for testicular toxoplasmosis, it can also occur in otherwise healthy individuals. Imaging studies of infected mice confirm that Toxoplasma parasites quickly travel to the testes in addition to the brain and eyes within days of infection. Toxoplasma cysts floating in cat feces. DPDx Image Library/CDC In 2017, my colleagues and I found that Toxoplasma can also form cysts in mouse prostates. Researchers have also observed these parasites in the ejaculate of many animals, including human semen, raising the possibility of sexual transmission. Knowing that Toxoplasma can reside in male reproductive organs has prompted analyses of fertility in infected men. A small 2021 study in Prague of 163 men infected with Toxoplasma found that over 86% had semen anomalies. A 2002 study in China found that infertile couples are more likely to have a Toxoplasma infection than fertile couples, 34.83% versus 12.11%. A 2005 study in China also found that sterile men are more likely to test positive for Toxoplasma than fertile men. Not all studies, however, produce a link between toxoplasmosis and sperm quality. Toxoplasma can directly damage human sperm Toxoplasmosis in animals mirrors infection in humans, which allows researchers to address questions that are not easy to examine in people. Testicular function and sperm production are sharply diminished in Toxoplasma-infected mice, rats and rams. Infected mice have significantly lower sperm counts and a higher proportion of abnormally shaped sperm. In that April 2025 study, researchers from Germany, Uruguay, and Chile observed that Toxoplasma can reach the testes and epididymis, the tube where sperm mature and are stored, two days after infection in mice. This finding prompted the team to test what happens when the parasite comes into direct contact with human sperm in a test tube. After only five minutes of exposure to the parasite, 22.4% of sperm cells were beheaded. The number of decapitated sperm increased the longer they interacted with the parasites. Sperm cells that maintained their head were often twisted and misshapen. Some sperm cells had holes in their head, suggesting the parasites were trying to invade them as it would any other type of cell in the organs it infiltrates. In addition to direct contact, Toxoplasma may also damage sperm because the infection promotes chronic inflammation. Inflammatory conditions in the male reproductive tract are harmful to sperm production and function. The researchers speculate that the harmful effects Toxoplasma may have on sperm could be contributing to large global declines in male fertility over the past decades. Sperm exposed to Toxoplasma. Arrows point to holes and other damage to the sperm; asterisks indicate where the parasite has burrowed. The two nonconfronted controls at the bottom show normal sperm. Rojas-Barón et al/The FEBS Journal, CC BY-SA Preventing toxoplasmosis The evidence that Toxoplasma can infiltrate male reproductive organs in animals is compelling, but whether this produces health issues in people remains unclear. Testicular toxoplasmosis shows that parasites can invade human testes, but symptomatic disease is very rare. Studies to date that show defects in the sperm of infected men are too small to draw firm conclusions at this time. Additionally, some reports suggest that rates of toxoplasmosis in high-income countries have not been increasing over the past few decades while male infertility was rising, so it’s likely to only be one part of the puzzle. Regardless of this parasite’s potential effect on fertility, it is wise to avoid Toxoplasma. An infection can cause miscarriage or birth defects if someone acquires it for the first time during pregnancy, and it can be life-threatening for immunocompromised people. Toxoplasma is also the leading cause of death from foodborne illness in the United States. Taking proper care of your cat, promptly cleaning the litter box and thoroughly washing your hands after can help reduce your exposure to Toxoplasma. You can also protect yourself from this parasite by washing fruits and vegetables, cooking meat to proper temperatures before consuming and avoiding raw shellfish, raw water and raw milk. Bill Sullivan, Professor of Microbiology and Immunology, Indiana University. This article is republished from The Conversation under a Creative Commons license. Read the original article.

The Fearsome Megalodon Ate Basically Whatever It Wanted to Reach Its Daily 100,000-Calorie Need, Study Suggests Scientists previously assumed the giant, prehistoric sharks mostly feasted on whales, but it turns out they probably weren’t so picky An artistic reconstruction of the extinct megalodon. Scientists' ideas about how the megalodon looked are based on its fossilized teeth. Hugo Saláis via Wikimedia Commons under CC BY 4.0 Between 3 million and 20 million years ago, the largest predatory fish ever known hunted in Earth’s oceans. Called theOtodus megalodon), this giant shark grew up to 79 feet long, had teeth the size of human hands and could bite with the strength of an industrial hydraulic press. But what scientists know about the extinct creature has been almost entirely determined from fossil teeth—since paleontologists have yet to discover a complete megalodon, and the animals’ cartilaginous skeletons don’t preserve well. Now, new research on the mineral content of their teeth suggests megalodons ate pretty much whatever they wanted. Until recently, scientists assumed that megalodons satisfied their estimated 100,000-calorie daily needs by mostly eating whales. A study published Monday in the journal Earth and Planetary Science Letters, however, suggests the prehistoric shark had a much more diverse diet than previously thought—akin to the great white shark’s “if it moves, it’s food” hunting strategy of today, writes Vice’s Ashley Fike. Jeremy McCormack with a fossilized megalodon tooth. Uwe Dettmar for Goethe University An international team of researchers reached this conclusion after analyzing the ratio of different variants, called isotopes, of the mineral zinc in 18-million-year-old megalodon teeth. Animals absorb zinc only through food, so this could offer a hint to their diets. Muscles and organs absorb more of the isotope zinc-64 than zinc-66, meaning that the higher up the food chain an animal is—or the more meat and fish it eats—the less zinc-66 it absorbs, and its ratio of zinc-66 to zinc-64 is lower, in turn. “Since we don’t know how the ratio of the two zinc isotopes at the bottom of the food pyramid was at that time, we compared the teeth of various prehistoric and extant shark species with each other and with other animal species. This enabled us to gain an impression of predator-prey relationships 18 million years ago,” Jeremy McCormack, a scientist from Goethe University Frankfurt and lead author of the study, says in a statement. Unsurprisingly, the isotope ratios in the teeth put the megalodon at the top of the food chain, alongside close shark relatives such as Otodus chubutensis. At the same time, however, the scientists noticed there wasn’t a huge difference between the megalodon and the lower-tiered animals, suggesting the sharks feasted on creatures from all rungs of the ladder. “They were not concentrating on certain prey types, but they must have fed throughout the food web, on many different species,” McCormack tells CNN’s Jacopo Prisco. “While certainly this was a fierce apex predator, and no one else would probably prey on an adult megalodon, it’s clear that they themselves could potentially feed on almost everything else that swam around.” The results also indicate that megalodon populations living in different habitats had slightly contrasting diets, potentially because of differing prey availability. More broadly, the study invites comparisons between the megalodon and its iconic extant relative, the great white shark. These comparisons, however, may have previously led to some overreaching assumptions. “Previous studies simply assumed that megalodon must have looked like a gigantic version of the modern great white shark without any evidence,” Kenshu Shimada, a vertebrate paleontologist at DePaul University and co-author of the new study, told National Geographic’s Jason Bittel back in March. He and colleagues had just published a different paper that reassessed the prehistoric shark’s size, suggesting that it had a more slender body than its smaller, modern cousin. The new study thus joins a host of research challenging widely held ideas about megalodons and their relatives, says Alberto Collareta, a paleontologist at the University of Pisa in Italy who was not involved in the research, to CNN. “These have led us to abandon traditional reconstruction of the megatooth sharks as ‘inflated’ versions of the modern white shark. We now know that the megalodon was something else—in terms of size, shape and ancestry, and of biology, too,” he adds. In fact, with both species eating generalist diets, great white sharks might have outcompeted megalodons for food and ultimately played a role in their demise. “Even ‘supercarnivores’ are not immune to extinction,” Shimada says in the statement. Get the latest stories in your inbox every weekday.