Learn why the herbal supplement valerian may not be as safe as you think, and what to watch for if you try it.

On a recent stay at a friend’s house, I encountered a familiar problem. The friend, a thoughtful host, had left us washcloths ...

From feel good to feel bad, and from first loves to break-ups, here are 10 ways movies make us feel all the feelings.

When the pancreas stops producing insulin, glucose doesn't enter our cells. Instead, it accumulates in the bloodstream. In ...

Tirzepatide (Zepbound, Mounjaro) is a dual-agonist GLP-1 medication. It works like a GLP-1 agonist, but also targets a hormone called glucose-dependent insulinotropic polypeptide (GIP) to “help break ...

GLP-1 weight loss drugs have quickly moved from medical journals to household conversations, reshaping how Americans think about obesity, diabetes and weight loss. Headlines often describe them as ...

Let’s start with a quick biology refresher: Mitochondria are the powerhouse of the cell. They convert the food we eat into ...

How long it takes for vitamins and supplements to work depends on factors like the type of vitamin, your diet and hydration, and how regularly you use it. Learn how to make the most of your vitamins ...

When HHMI Investigator Amita Sehgal started studying sleep 25 years ago, the topic elicited a yawn from most biologists. "In ...

New research on heart rate variability suggests that composure isn’t a personality trait. It’s a physiological skill the nervous system can train—one that may determine who thrives when the stakes are ...

Scientists have long known that people living at high altitudes, where oxygen levels are low, have lower rates of diabetes than people living closer to sea level. But the mechanism of this protection ...