Smoking

The reasons people use e-cigarettes are shifting, with fewer using them as a way to quit smoking, and more using them as to a way to boost their social image, a new study finds.

Keeping your heart healthy could also benefit your brain — a new study suggests that people who have risk factors for heart disease in middle age are also at increased risk for dementia.

A new study finds that certain markers for heart disease risk are higher in e-cigarette users than in nonusers.

When it comes to vices, James Bond may be known for martinis, but a new study finds that he's been quite the smoker as well.

A new report checks in on the progress the U.S. is making toward meeting its health goals for 2020.

A 6-year-old girl experienced severe nicotine poisoning after her parents accidentally gave her liquid nicotine instead of a pain reliever.

Smoking marijuana during pregnancy doesn't appear to increase the risk of preterm birth or other harmful birth outcomes, a new review study suggests.

Nearly 21 million Americans ages 12 and older had a substance use problem in 2015, according to a new federal estimate.

A California city has the highest rate of marijuana use in the country.

Researchers looked at whether using marijuana was linked to a host of health problems.

There are five key habits that researchers have definitively linked with better health and a longer life. But few people are doing them.

Can eating a healthier diet and exercising regularly prevent cancer?

With the recent increase in e-ciggs' popularity, evidence is beginning to emerge on what they do to people's health.

Before reaching for a cigarette, consider your baby's genes.

Nothing gets the internet talking like viral cat videos, and now a new anti-smoking ad has tapped into our love of funny cats for health education, a move that experts welcomed.

Like alcohol, rich foods and tobacco, too much sleep and sitting around are not good for you — especially if they occur together.

Smoking pot may increase risk for prediabetes.

Teens who "vape," or use electronic cigarettes may be more likely to start smoking regular cigarettes than teens who have never tried e-cigarettes, according to a new study.