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Short Sleep Added About a Pound in Six Weeks in a 95-Adult Study. Here’s the Fine Print

Adults who delayed bedtime by 90 minutes for six weeks gained about a pound on average in a pooled analysis of randomized trials. Here is what the study did and what it can’t tell us.

Regular Tea Drinkers Had Fewer Heart and Vascular Problems in a 486,000-Adult Study

A study of nearly 486,000 adults in China linked regular tea to an 11% lower risk of vascular disease. The catch: very hot tea was linked to higher risk.

Wall Squats Lowered Blood Pressure in a 100-Person Trial. Doing Them Less Often Kept Part of the Gain

In a randomized trial of 100 adults, home wall squats cut systolic pressure, and one or two weekly sessions kept some of the benefit. The catch: it was short and small.

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Coffee Calories Are Up Nearly 40% in 15 Years, and Creamer Is the Biggest Reason

A Tufts analysis of 30,000 U.S. adults found coffee calories rose from about 43 to 60 a day, with non-dairy creamer now the largest source of added calories. Here is what that does and does not tell us.

Halloween Night Is Riskier for Young Pedestrians. Here’s What the Research Says, and How to Stay Safe

A study of 42 years of U.S. crash data found pedestrian deaths rise on Halloween evening, especially among kids ages 4 to 8. Here is what that means and how families and drivers can lower the risk.

Lab Study Finds Many Low-Calorie Sweeteners Alter Gut Bacteria. Here’s the Fine Print

A Cambridge lab study tested 39 sweeteners on 25 gut bacteria species and found most affected at least one. It was done in dishes, not people, so here is what it can and can’t tell you.

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Just 10 Minutes of Daily Exercise Was Linked to Deeper Sleep in a Study of Young Adults

A Fitbit-based study of University of Texas students linked as little as 10 minutes of daily activity to more deep sleep. Here’s the fine print.

Late-Night Eating Linked to Higher Risk of Fatty Liver Disease and Cirrhosis in a Study of 199,000 Adults

People who regularly ate after dinner or after bedtime had a higher risk of fatty liver disease and cirrhosis in three large U.S. cohorts. Here’s what the study can and can’t tell you, and some low-risk habits to try.

Flu Shot Season: What to Know Before the End of October

The CDC recommends getting a flu vaccine by the end of October. Here’s who should get one, what’s new for 2026–27 and answers to common questions.

Hard Intervals Helped Adults in Their 70s Lose Fat Without Losing Lean Mass, a 6-Month Study Finds

In a trial of 123 healthy older adults, high-intensity interval training trimmed fat while preserving lean mass. Other research is more mixed, and the differences were small.

Olive Oil Before Carbs Blunted Blood Sugar Spikes in Mice. Here’s What That Means for Your Plate

A Kyoto University study found fat eaten first slowed the stomach and tamped down early blood sugar rises in mice. Human evidence on meal order is still limited.

Loneliness and Isolation May Cost Years of Healthy Life, a Study of 277,000 Adults Finds

People who were both lonely and socially isolated could expect up to 5.8 fewer years free of mental disorders. Healthy habits helped with one of the two, but not the other.

Nicotine Vapes Helped More Smokers Quit Than Patches or Gum, a Review of 80 Trials Finds

An updated Cochrane review of nearly 30,000 smokers found regulated nicotine e-cigarettes beat nicotine patches and gum for quitting. Here’s what that does and doesn’t mean.

Coffee Drinkers Have a Different Gut Mix, a Small Study Finds. Decaf May Have Perks of Its Own

A small Irish study found regular coffee drinkers had distinct gut bacteria and metabolites, and that decaf and regular coffee may affect mood and memory differently.

Halloween Candy Without the Sugar Hangover: A Realistic Game Plan

Halloween falls on a Saturday this year, which means a weekend of treats. Here’s what current US guidance says about added sugar, plus simple, food-safe ways to enjoy the night without a weeklong candy binge.

How Much Strength Training Do You Really Need? What the Research Says

Official guidelines call for strength work twice a week, and a 147,000-person study points to a sweet spot of about 90 to 120 minutes. Here’s what the evidence says and how to start.

How You Hold Your Arm Can Skew a Blood Pressure Reading by Nearly 7 Points

In a Johns Hopkins study, resting the arm on the lap or letting it hang raised blood pressure readings compared with a desk. Here’s how to measure at home the right way.

Dairy’s Natural Trans Fats Weren’t Linked to Heart Disease in a Review. Here’s the Fine Print

A review of 22 studies found no link between the trans fats that occur naturally in dairy and heart disease or diabetes. The work was funded by the dairy industry, and it has other limits worth knowing.