A night-shift worker finishes at dawn. Their phone says Tuesday, but their body feels like it's Monday. The body's internal ...

When you take a drug, where in your body does it actually go? For most medications, scientists can make only educated guesses ...

Although it also performs some functions in men, estrogen, the main female sex hormone, is involved in a myriad of processes, ...

What makes someone a "morning lark" or a "night owl?" Why does jet lag hit us so hard, and why do some people struggle each ...

Estrogens, the main female sex hormone, although they also perform some functions in men, are involved in a myriad of ...

The tiny pantheon known as the Asgard archaea bear traits that hint at how plants, animals and fungi emerged on Earth.

Research into how a father’s choices, including diet, exercise, stress and nicotine use, may transfer traits to his children ...

One of the biggest mistakes you can make in life is believing that you know everything there is to know. Even if you’re ...

Scientists identify measurable cellular changes that flag higher cancer risk more than a decade before tumors appear. In A ...

From vitamin C to your microbiome and mindset, the latest science of immunity is often counterintuitive. Here's how to give ...

Tattoo ink doesn’t just sit inertly in the skin. New research shows it moves rapidly into the lymphatic system, where it can persist for months, kill immune cells, and even disrupt how the body ...

Cells are not immortal, and that is a good thing. After a certain number of divisions, many human cells stop multiplying for ...