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Teens using AI to diet may be told to eat almost 700 fewer daily calories than they need
Many teens report wanting to lose weight, and many say they use AI daily. Chatbots for getting meal plans could have huge health consequences, a new study says.
2 science-backed ways to improve your breakfast
Eating the majority of your calories earlier in the day can be beneficial, but so can adding more fiber and protein.
Living longer could hinge on one surprising dietary change, study review suggests
A review of 350+ studies finds protein restriction triggers the hormone FGF21, delivering longevity benefits similar to calorie restriction.
Why this teen founder walked away from his multimillion-dollar company
MyFitnessPal acquired Cal AI, an AI-powered calorie-tracking app that 19-year-old Zach Yadegari cofounded while he was in high school, last year.
2 science-backed ways to improve your breakfast
Eating the majority of your calories earlier in the day can be beneficial, but so can adding more fiber and protein.
Meal timing in time-restricted eating matters for metabolic health, find study
Time-restricted eating has emerged as a popular dietary approach because it focuses on when people eat rather than strictly limiting calories. Instead of counting calories, individuals restrict their ...
New issue: Don't count the calories | BBC Science Focus Magazine
January’s long nights, howling winds and unending drizzle that constitute a British winter all seem to scream: stay indoors, get under a blanket and stay very still. But every year, I reach January and the same conclusion as millions of others: it’s time for change. Christmas is what does it. There’s only so much indulgence the body can take. It starts on the 24th when, if you’re lucky, work’s finished and the fridge is full. Over the next seven days, I’ll feast like a Tudor monarch, picking at carcasses, stabbing at cheese and washing it all down with a bit of port (well, someone’s got to finish it). But by New Year’s Day I’ve had enough. Meaningful, lasting change isn’t easy. The science says so. Sure, a fitness influencer will scream at you until they’re Christmas-ham-pink in the face that losing weight is JUST SIMPLE MATHS: burn more calories than you consume, and you’ll lose weight. But your genes, biology and chemistry don’t work like a calculator. There’s more to it. So we’re here to help you construct bite-sized changes that will add up to significant improvements in your health and wellbeing this year.
Scientists say this common sweetener may be quietly rewiring your metabolism
Researchers say fructose is not just “empty calories” — it may actively push the body toward fat storage and metabolic disease. A new review found that fructose affects the body differently from glucose, disrupting normal energy regulation and promoting processes linked to obesity, insulin resistance, and cardiovascular problems.
How Healthy Are Meat Sticks and Jerky as Protein Sources?
These convenient snacks are rich in protein and low in calories, but they are considered processed meats. Here's how often you should eat them.
Your Fruits and Veggies Are Losing Their Nutrients—Here’s Why
The Green Revolution did wonders to increase calories to feed a growing population, but the nutritional value of those crops didn’t experience the same boom.
Scientists discover hidden fat-burning switch that could strengthen bones
Scientists at McGill University have uncovered a hidden molecular “switch” that turns on a powerful calorie-burning system in brown fat — the body’s heat-generating fat linked to metabolism and weight control. The breakthrough centers on glycerol, a molecule released when fat is broken down in the cold, which activates an enzyme called TNAP and triggers an alternative heat-producing pathway that scientists had struggled to explain for years.
Scientists discover a hidden system that turns brown fat into a calorie burner
Scientists have identified a key biological system that helps brown fat burn energy by building the networks it needs to function. A protein called SLIT3 splits into two parts, with each piece guiding the growth of blood vessels and nerves inside brown fat. These structures allow the tissue to pull in nutrients and rapidly convert them into heat instead of storing them as fat.
Stairmaster vs walking: Which cardio is best for long-term health, reveals fitness coach - The Times of India
Fitness experts advocate for walking over intense Stairmaster workouts for sustainable fat loss. While the Stairmaster offers immediate calorie burn,
Study finds that smartwatches are ‘lying to you’ about how many calories you burned
Do you use your smartwatch to track how many calories you burn? Well, a new study may make you want to put a pause on that. In fact, researchers at Florida International University (FIU) explicit…
Scientists found a smarter Mediterranean diet that slashes diabetes risk by 31%
A large European study revealed that a lower-calorie Mediterranean diet paired with exercise and coaching dramatically reduced the risk of type 2 diabetes. Participants who made these lifestyle changes were 31% less likely to develop the disease over six years. They also lost more weight and trimmed their waistlines compared to those following a standard Mediterranean diet alone.
This new sugar tastes like the real thing without the usual downsides
Scientists at Tufts have found a way to turn common glucose into a rare sugar that tastes almost exactly like table sugar—but with far fewer downsides. Using engineered bacteria as microscopic factories, the team can now produce tagatose efficiently and cheaply, achieving yields far higher than current methods. Tagatose delivers nearly the same sweetness as sugar with significantly fewer calories, minimal impact on blood sugar, and even potential benefits for oral and gut health.
Sugar substitutes are low in calories, but may disrupt your metabolism, study says
Artificial sweeteners also may increase risk of type 2 diabetes and heart disease, the research shows.
A David Protein lawsuit alleges the buzzy bars have far more calories than listed. Does science agree?
A class action lawsuit alleges that David Protein bars contain significantly more calories and fat than advertised.
Scientists Reveal Why Bread Can Cause Weight Gain Without Overeating
It's not just 'calories in, calories out'.
Scientists discover why bread can cause weight gain without extra calories
Bread and other carbohydrate staples may be doing more than just filling plates—they could be quietly reshaping metabolism. In a surprising twist, researchers found that mice strongly preferred carbs like bread, rice, and wheat, abandoning their regular diet entirely. Even without eating more calories, they gained weight and body fat, not because they overate, but because their bodies burned less energy.
Scientists discover diet that tricks the body into burning fat without exercise
Researchers found that cutting two amino acids common in animal protein—methionine and cysteine—made mice burn significantly more energy. The boost in heat production was nearly as powerful as constant exposure to cold temperatures. The mice didn’t eat less or exercise more; they simply generated more heat in their beige fat. The discovery hints that diet alone might activate the body’s calorie-burning machinery.
Dirty soda drinks are everywhere, but doctors warn of health risks: 'Metabolic disaster'
Dirty sodas combine soft drinks with syrups, creamers and fruit juices, delivering up to 400 calories and 70 grams of sugar per drink, doctors warn.
Cal AI's 19-year-old founder just raised $10M for his new AI startup
Zach Yadegari, the teen co-founder of popular Cal AI calorie tracking app, has launched a new personal AI agent startup that competes with Instinct, Muse and Bee.
Stop eating 3 hours before bed to improve heart health
A simple shift in your evening routine may give your heart a measurable boost. In a new study, adults who stopped eating and dimmed the lights three hours before bed and extended their overnight fast by about two hours saw improvements in blood pressure, heart rate, and blood-sugar control — without cutting calories.
Which cheese is healthiest? See comparison of calories, fat and sodium
While cheese has some health benefits it can also prove unhealthy in excess. Here are some health details to consider.
The 3 Hour Rule That Could Boost Your Heart Health
Participants stopped eating and lowered the lights three hours before bedtime, extending their overnight fast by about two hours without cutting calories. Compared with the control group, nighttime blood pressure dropped by 3.5% and heart rate fell by 5%, signaling a healthier pattern during sl
Why your smartwatch is so bad at telling you how many calories you burned
A new study found that smartwatches overestimated caloric burns by about 15 to 25 percent.
Scientists find a safer way to make cells burn more calories
Researchers have developed experimental compounds that make cells burn more calories by subtly tweaking how mitochondria produce energy. Older versions of these chemicals were once used for weight loss—but were banned for being deadly. The new approach fine-tunes the effect, allowing cells to burn extra fuel safely. If successful, this could pave the way for new obesity treatments with added health benefits.
Nine science-backed ways to prevent overeating this Christmas
Flavour perception and food presentation can affect our brain and make us feel fuller earlier, so we eat fewer calories
Scientists find Ozempic may slow aging itself
Semaglutide helped older healthy mice live longer while improving memory, muscle function, blood sugar control, and several biological signs of aging. Its effects went beyond those seen with calorie restriction, raising the possibility that GLP-1 drugs could tap into a separate biological pathway linked to longevity.
Diet soda's mixed science and how to kick the habit
The research on diet sodas has about as much clarity as a glass of Diet Coke. Here's a quick guide by PolitiFact to navigating the low-calorie beverage menu — and weaning yourself off sweet, fizzy sodas, if you’re ready.
Diet soda's mixed science and how to kick the habit
The research on diet sodas has about as much clarity as a glass of Diet Coke. Here's a quick guide by PolitiFact to navigating the low-calorie beverage menu — and weaning yourself off sweet, fizzy sodas, if you’re ready.
Influencers and biohackers swear by fasting. Here’s what the science says.
Fasting can help some people reduce how many calories they eat — but it’s not “effortless” as some influencers would have you believe.
CES 2026: Garmin had the nerve to launch a food-tracking feature in Las Vegas
Garmin's CES announcement was not another wearable. It's upgrading its Connect Plus app so you can track your nutrition and calorie intake.
Scientists discover a hidden problem with this popular sugar substitute
Sorbitol, a sugar alcohol commonly used in sugar-free candy, gum, and other low-calorie foods, may not be as harmless as it seems. Researchers at Washington University in St. Louis found that the body can convert sorbitol into a form of fructose in the liver, potentially triggering some of the same harmful metabolic effects linked to fructose.
With 'Fat Marmot Week,' scientists hope to turn important marmot research into serious fun
For a marmot living in the Rocky Mountains, summer is the time to fatten up and get ready for hibernation. But this year's warmer, earlier spring has made it tough for marmots to get enough calories. A team of marmot scientists near Crested Butte is launching the first-ever Fat Marmot Week to raise awareness about these unique, chunky mammals.
People Ate 2 Meals With The Same Calories And Macros. Scientists Watched As 1 Spiked Their Insulin Much More
Ultra-processed food impacts brain activity associated with rewards, as well as our metabolisms.
This in-season 35-calorie fruit can boost your immunity, improve your...
Want to stay healthy this cold and flu season — and look good doing it?
The sugar intake – oral diseases nexus: Leveraging food environments for better population nutrition and health
Across the World Health Organization (WHO) Western Pacific Region, our diets are changing rapidly. Globalization has made processed foods, which often do not align with healthy diets, easier to find, more affordable, and more heavily marketed than ever before. Unfortunately, many of these products are often high in saturated fat, trans-fatty acids, salts and free sugars, contributing to the burden of all forms of malnutrition, including diet-related noncommunicable diseases (NCDs). The impact of these dietary changes is staggering. Sugars, in particular, are empty calories and are often hidden in processed foods and beverages. Over the last 20 years, the health burden linked to sugary drinks has nearly tripled, reaching 52.3 disability-adjusted life years per 100 000 in 2023. Excessive sugar is a leading cause of obesity, diabetes, and—most notably—oral diseases. Today, oral diseases affect over 960 million individuals in the Western Pacific Region. Tooth decay is the most common issue, especially for childre
This Overlooked Part Of Your Stress Hormones May Affect Metabolic Health
How the body stores fat goes way beyond calories and macros.
Can what we feed farm animals directly benefit our own health?
Several chronic diseases—obesity, cardiovascular disease, type 2 diabetes and some cancers—have been linked to lifestyles and diets high in calories, based on processed foods and lacking diversity and ...
Does swearing make you stronger? Science says yes.
“A calorie-neutral, drug-free, low-cost, readily available tool for when we need a boost in performance.”…
Study Raises Serious Questions About The Benefits of Intermittent Fasting
Calories count too.
MORNING BUSINESS REPORT: Oil tanker shortage, McDonald's other ads, smartwatches vs calories
An oil tanker shortage could keep prices high, McDonald's plans to add ads for other businesses, and smartwatches may not accurately count calories. Here's the Morning Business Report for Sept. 23.
Scientists tested intermittent fasting without eating less and found no metabolic benefit
Time-restricted eating has been widely promoted as a simple way to boost metabolic health, but new research paints a more complicated picture. When calorie intake stayed the same, an eight-hour eating window did not improve insulin sensitivity or cardiovascular markers. What did change was the body’s internal clock, which shifted based on meal timing and altered sleep patterns. The results suggest calorie reduction, not the eating window itself, may be the real driver of health benefits.
Popular sweeteners may leave effects that last for generations
Two widely used zero-calorie sweeteners, sucralose and stevia, may have effects that linger far longer than the sweet taste itself. In mice, researchers found that both sweeteners altered the gut microbiome, reduced beneficial compounds produced by gut bacteria, and changed the activity of genes involved in metabolism and inflammation. Some of those changes were also detected in later generations that had never consumed the sweeteners themselves.
Ordering Takeout? These 6 Tricks Could Make It Healthier
Healthy takeout is possible. Try these simple tips to make your favorite orders lower in sodium, fat and extra calories.
Garmin Watches Can Now Track Food, Macros And Nutrition
Garmin's nutrition tracking feature will tally up daily calorie consumption as well as macros, including protein intake, via watch and the Connect app.
Myth busted: Your body isn’t canceling out your workout
Being active boosts your daily calorie burn more than previously thought. Researchers found that increased physical activity raises total energy use without triggering the body to conserve energy elsewhere. Basic functions keep running at full speed, even as movement increases. The result: exercise truly adds to your energy output rather than being metabolically “offset.”
Is watermelon good for you? Experts explain calories, sugar content
Watermelon is a summer staple known for its refreshing taste and high water content, but many people wonder how healthy it really is.
Zepbound and Mounjaro may turn on the body’s calorie-burning brown fat
Tirzepatide, sold as Mounjaro and Zepbound, activated calorie-burning brown fat in obese mice, revealing a potential metabolic effect beyond appetite suppression. If confirmed in humans, the finding could help explain the drug’s powerful benefits and inspire more comprehensive treatments for obesity and diabetes.
Scientists may have found a shortcut to calorie restriction’s anti-aging benefits
Moderate calorie restriction lowered an immune protein called C3 that appears to help drive chronic inflammation as the body ages. Blocking the same protein reduced age related inflammation in mice, raising the possibility that future treatments could mimic some benefits of calorie restriction without severe dieting.
Science: Cockroach Milk Called Theoretically Superior
The reporting on cockroach theoretical milk makes perfect sense: Cockroach milk is among the most nutritious substances on Earth. It’s three times richer in calories than buffalo milk (the previous top contender for the most protein- and calorie-rich milk). …it tasted like pretty much nothing. You could, in theory, splash it into coffee or pour … Continue reading Science: Cockroach Milk Called Theoretically Superior →
Low-fat vegan diet helps people lose weight without eating less
A low-fat vegan diet may help people lose weight without counting calories, shrinking portions, or feeling constantly hungry. In a 16-week clinical trial, people eating mostly fruits, vegetables, grains, and legumes consumed about 357 fewer calories per day even though the total amount of food they ate barely changed.