Tobacco use among young adults is on the rise, with many of them using more than one type of tobacco product daily.

The harmful health effects of smoking haven’t stopped some people from smoking. Teens are smoking, too, and some factors may increase smoking in teens.

As people age, there are sometimes impacts on memory, communication and other mental faculties. But could choices we make throughout life ultimately delay the onset of those conditions?

After a heart attack, quitting smoking can be a life-saving health decision. Could quitting smokeless tobacco have the same effect?

To date, there is still no known single cause of autism. But recent research may have uncovered a new potential player in the development of the condition.

There are guidelines for treating children 4 years of age and older for ADHD, but no such guidelines exist for younger children. That lack of guidance hasn’t prevented the treatment of thousands of toddlers for ADHD.

In 2003, the Food and Drug Administration (FDA) issued several warnings about a possible increased risk of suicide among young people who were prescribed antidepressants. However, these warnings may have had the opposite effect than intended.

There has been a debate about ADHD and whether it's overdiagnosed. To date, there has not been an objective way to diagnose the condition, but new research may change that.

Matters of health can't always be separated clearly into physical issues and mental issues. A new review examined one such overlap between physical and mental health — sleeping troubles in cancer patients.

Young women are more prone to depression than older women or men of any age. New research looked into whether depression was a sign of physical health problems.