Many psychiatric hospitals have started helping patients quit smoking, which is terrific. But the same hospitals may not be preparing patients to remain smoke-free when they go home.

Twin research studies help scientists see the difference between genes and environment. With smoking, these studies highlight how addictive nicotine itself really can be.

Quitting smoking is a difficult task. But quitters may find it easier to stay on task by making quitting a part of healthy lifestyle choices that include getting more exercise.

Teenagers have an incredible capacity to learn, grow and change. And that capacity may be of service when it comes to reducing unhealthy drinking behavior among teens.

Smoking can do more than damage your lungs and give you bad breath. It's also linked to kidney disease in adults – and possibly in children as well.

Quitting smoking can be tough, but it simply has to be done. Researchers keep looking at ways to help people quit for good, even if there are side effects involved.

Finding lung cancer at its earliest stages, when there is still the chance of a cure, is a problem. Regular CT scans can detect such cancers in older smokers who’ve smoked the equivalent of a pack a day for 30 years.

Of course good oral hygiene is key in preventing tooth loss, but other lifestyle factors are important too. Healthy teeth may reflect healthy lifestyle choices.

Patients may not always follow the instructions their doctors provide for prescription medications. In fact, more than half of Americans in a recent study did not.

Using alcohol or drugs during times of stress is the last thing a kid should be doing. But kids admitted to hitting the hard stuff when a parent was away on military deployment.