Firms like Function Health and Oura market regular blood tests to people wanting to take their health into their own hands. The process often raises more questions for patients than it can answer.

Wellness influencers tout the therapy's power for everything from rejuvenating skin and hair to boosting longevity. Devices sold for at-home use abound. We look at the evidence behind the hype.

In her new book You've Been Pooping All Wrong, Dr. Trisha Pasricha shares habits and practices to make your relationship with your solid waste as smooth as possible

A reactivation of the virus that causes chickenpox, the illness can be miserable. Here's what to know about early warning signs, long-term symptoms and some surprising news about the vaccine.

"Pain is a mysterious thing," says neurosurgeon Dr. Sanjay Gupta. But understanding how it works in the body and different kinds of treatment can help you find the right pain relief when you need it.

The Dietary Guidelines released this year recommend higher levels of this essential nutrient. But protein needs are personal. Here's how to assess yours.

A glass-half-full outlook can keep you engaged and hopeful in hard times. Take this quiz to find out your level of optimism, then learn how to train yourself to become more optimistic.

We asked our audience to share the creative ways they limit their own phone use. They range from the practical (keep your phone in another room) to the creative (pair your phone with a fun paperback).

A full calendar doesn't mean you have to feel exhausted all the time. Experts share natural ways to boost energy and beat the constant battle of tiredness.

If you get a high reading at the doctor's office, it may not be definitive. Here's what to know about your risk — and testing your blood pressure at home.