Cortisol is bad. Testosterone makes you aggressive. Melatonin helps you sleep. Experts bust common hormone myths ...

Cortisol is a hormone involved in your body's stress response, and you'll start to see certain symptoms appear when it gets highly elevated.

YOU can’t stop the clock, but it turns out you CAN reduce your biological age. To test the theory, writer Ellie O’Mahoney ...

Earwax isn't dirt — it's an antimicrobial secretion split into two genetic types, tied to hearing loss risk, and able to flag ...

Being in a dramatic or stressful partnership can make your heart feel like it’s in the washing machine. But, as Lydia Spencer ...

The latest ACC/AHA cholesterol guidance goes beyond simply lowering LDL or "bad" cholesterol. It encourages people to think ...

And your mindset plays a surprisingly strong role.

Magnesium isn't one-size-fits-all.

A psychiatrist says one common blood test may reveal whether inflammation is playing a role in depression—and what you can do ...

A new study of wild bats reveals that an animal's immune system is shaped by more than its need to fight infections. Researchers from the University of Maryland have found that sex, age and ...

Cortisol is a critical hormone that is needed for the function of many body systems. Without cortisone, the body can’t respond to stress, and a stressful event can literally kill a patient.

When it comes to traveling for medi spas and biohacking retreats, only some clinics are actually worth their salt. Here's ...