Attempting to maintain up with the flood of wellness traits final 12 months was bewildering. Influencers promoted seemingly infinite merchandise and experiences underneath the banner of “wellness.” Some traits, like celery juicing, chilly plunges and protein bars have been round for a number of years now. However different traits that got here throughout our radar in 2025 had extra of an “outdated is new once more” power, like embracing full-fat dairy and cooking with beef tallow.
At NPR’s science desk, we did our greatest to select aside what’s wholesome and what’s hype. Listed here are seven of the traits NPR reported on, and what the info and specialists needed to say about them.
This story initially ran in NPR’s Well being e-newsletter. Need the most recent tales on the science of wholesome residing? Subscribe right here.
Development: A return to full-fat dairy
For many years, public well being messaging warned in opposition to high-fat dairy. However the argument in opposition to it’s largely “circumstantial,” says Benoit LaMarche, a Canadian meals scientist who headed up an proof evaluation of the connection between dairy and coronary heart illness threat, revealed in Might.
The evaluation concluded that usually talking, fat-free, low-fat and full-fat dairy merchandise had the identical results. Some research have even proven the advantages of higher-fat over lower-fat dairy. As an illustration, one research that adopted 18 adults for 3 weeks discovered ingesting complete milk truly outperformed skim milk in relation to elevating HDL, or “good” ldl cholesterol.
Furthermore, specialists are saying that worrying in regards to the fats content material in dairy is actually a distraction from larger dietary considerations like consuming meals with an excessive amount of salt, refined carbs and sugar.
The subject’s on the radar since Well being Secretary Robert F. Kennedy Jr. promised to finish the “assault on complete milk, cheese and yogurt.” It is also more and more well-liked on-line amongst these collaborating within the TikTok-driven “cottage cheese comeback.”
Backside line: Not the worst thought. Learn the total story.
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Development: Carrying a weighted vest whereas taking your day by day stroll
Is striding round in an uncomfortably heavy vest an excellent exercise that marries strengthening, weight reduction, and cardio with contemporary air and sunshine — or are wearers merely projecting a fitness-y picture to their neighbors?
Weighted vests are sometimes marketed to ladies of their 40s, trying to improve muscle and bone development to mitigate the results of lowering estrogen. However the proof that sporting them works for that’s notably scant.
One small research in contrast folks strolling with weighted vests with those that walked with out them and located no vital distinction in bone well being. One other research did discover some advantages for individuals who wore weighted vests whereas partaking in resistance exercises, however the research would not clarify whether or not the vests or the workouts have been the reason for wholesome bone development.
If you need a science-backed strategy to construct muscle or substitute bone density misplaced throughout perimenopause and menopause, specialists like train scientist Lauren Colenso-Semple suggest resistance coaching.
Weighted vests could have some advantages for cardiovascular well being, says Roger Fielding, who research train science at Tufts College. Plus strolling the identical distance with extra weight will burn extra energy. (Simply do not anticipate us to do choreo, okay?!)
Backside line: Will not damage however there are higher methods to construct muscle. Learn the total story.
Development: Scientifically monitoring your blood sugar, even when you do not have diabetes
Motivation is a tough enterprise for folks trying to get leaner or eat more healthy. The reward of becoming right into a gown for a marriage that is months away, or logging decrease blood sugar at your subsequent bodily is unsure and distant – however that rum cake will present the jolt of satisfaction you crave proper now. So might real-time knowledge shift the calculus?
That is the promise behind sporting a steady glucose monitor, or CGM, a small gadget that sticks to the again of the arm. Each jiffy it sends a sign to your telephone estimating the focus of sugar in your blood. The tech has been a game-changer for some folks with diabetes, offering a extra user-friendly different to finger prick exams.
For folks with out diabetes, the idea is, a wearable glucose monitor can present you which of them snacks or meals make your blood sugar spike too excessive, and you may modify your weight-reduction plan accordingly.
In keeping with the analysis, CGMs have helped some folks decrease their blood sugar or drop a few pounds – others not a lot.
There was a whole lot of private variation within the outcomes of two current research, says Collin Popp, a researcher at NYU Grossman Faculty of Medication who helped lead one of many research. “We had people coming again and saying, ‘You modified my life. I misplaced 30 kilos and I really feel nice.’ Different folks within the research placed on weight,” he says.
In case you strive a CGM, you could wish to take the info with a grain of salt. One current research discovered that the identical meal eaten on two totally different days gave very totally different readings. One other small research discovered that the continual glucose monitor overestimated folks’s blood sugar ranges in contrast with measuring it in a blood take a look at.
Backside line: Steady glucose displays will be useful, however take them with a grain of salt. Learn the total story.
Development: Consuming a shiny blue dye
This is a bizarre one. Wellness influencers have been singing the praises of an artificial dye that stains their tongues blue, they usually declare it provides a bunch of advantages. Methylene blue dye is way from new. Formulated as a textile dye within the nineteenth century, it is since been prescribed as a remedy for malaria, cyanide poisoning, and methemoglobinemia, a uncommon blood dysfunction.
Biohackers declare that methylene blue improves the perform of the cells’ mitochondria, thereby slowing getting older, enhancing temper and cognition, amongst different advantages.
Research in rodents have proven methylene blue does enhance mitochondrial perform and scale back irritation. However in preliminary human research, the outcomes have not proven vital profit in wholesome folks, says Lorne Hofseth, a researcher on the College of South Carolina Faculty of Pharmacy.
And there is dangers, together with serotonin toxicity – a drug response that may trigger elevated blood strain, diarrhea, seizures, and even loss of life. And like different dietary supplements, methylene dye is not examined for security earlier than it goes to market. It may be onerous to know what you are actually getting.
Backside line: You are in all probability turning your tongue blue for no purpose. Learn the total story.
Development: Extra protein in every part … even your Oreos!
If you need protein on the go, you do not have to look far. Grocery and comfort retailer cabinets are lined with bars, cookies, brownies and different snack meals with “excessive protein” printed on the label.
However how do you suss out advertising and marketing from truth? It turns on the market’s no explicit metric producers want to fulfill so as to promote a product as “excessive protein.” As an illustration, a sweet with 1 gram of protein could have a high-protein advertising and marketing declare on the entrance of the bundle, which admittedly is much more than most sweet, says physiologist Stefan Pasiakos, however clearly would not make it wholesome.
One fast rule of thumb to evaluate protein claims is to verify the proportion of the day by day worth of protein on the diet details label on the bundle. Something 20% or above will be seen as excessive protein, in response to the FDA.
And even when they’re excessive protein, packaged snacks will also be excessive in energy, sugar, or processed substances. You may do higher to get protein from complete meals like yogurt or throughout meals, say nutritionists.
That being mentioned, protein snacks is usually a handy strategy to scale back muscle soreness after a exercise.
Backside line: Junk meals remains to be not a good selection, even with protein added. Learn the total story.
Development: Beef fats is again, child! For cooking (and skincare?!)
This March, Well being Secretary Kennedy sat down at a quick meals burger joint with Fox Information host Sean Hannity, to speak about weight problems and metabolic illness. The 2 have been at a Steak N’ Shake in honor of the chain’s swap from vegetable oil to tallow, or rendered beef fats, to cook dinner French fries.
Tallow was phased out of quick meals chains a long time in the past, however Kennedy says it is a more healthy different to seed oils (aka vegetable oils), which he claimed in a put up on X are “one of many driving forces of the weight problems epidemic.”
So are fries cooked in beef tallow any more healthy?
“Folks ought to eat fewer French fries, no matter they’re deep fried in,” says diet scientist Christopher Gardner.
Beef tallow and different saturated fat can result in clogged arteries and hypertension, he notes. And as a menace to well being, seed oils have been unfairly villainized, says heart specialist. Dariush Mozaffarian, at Tufts College.
The true well being villains in junk meals are extreme quantities of refined grains, starches, and sugars, in addition to salt and different preservatives, chemical components, he says.
In the meantime skincare merchandise constituted of beef tallow are trending this 12 months, too. It is all a part of a cultural second the place persons are skeptical of artificial substances, says Jennifer Reich, a sociologist on the College of Colorado Denver. As a form of shortcut to more healthy decisions, Reich says folks go for issues like beef tallow that appear pure as a result of it ostensibly comes from a farm as an alternative of an abroad manufacturing facility provide chain. But for some customers, they will make pores and skin issues like zits worse.
Backside line: Not so quick. Learn the total story on cooking with tallow.
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Development: Creatine dietary supplements are every part
Wellness influencer Bobby Parish declared creatine the “complement of the 12 months” for 2025 in a promotional TikTok put up. It is a compound constituted of three amino acids that your muscle tissue use as a supply of power. Lengthy a favourite of body-building gymnasium bros, it is one other product that fans now credit score with a number of advantages, together with mind perform and regulating blood sugar.
The proof nonetheless is not sturdy for these two claims, however in relation to including lean muscle mass, the proof for creatine dietary supplements is “overwhelming,” says Jose Antonio, a professor of train and sports activities science at Nova Southeastern College in Florida. It may additionally assist present power to maintain at your exercise longer.
However one large caveat right here: Taking dietary supplements is not sufficient to see energy beneficial properties – you truly need to get your butt to the gymnasium and work out. A evaluation of 35 research discovered that when creatine dietary supplements have been mixed with resistance coaching, grownup males added round 2 to three kilos of lean physique mass.
For security precautions and a few fundamental steering on find out how to dose if you would like to strive creatine, try the report by NPR’s Maria Godoy.
Backside line: These would possibly truly be fairly useful, however do not skip the gymnasium. Learn the total story.
