Stress is an everyday part of life, but could it be hurting you more than you know? If you are trying to break a bad habit, especially an addiction, the answer may be yes.

Previous claims that women have a tougher time quitting smoking may not be true. It is possible that men and women have trouble with different aspects of quitting smoking.

It's not just that they're not in the mood. Millions of women experience pain during sex due to a painful vaginal condition. And many are likely to suffer from other chronic pain conditions.

While some vaccines can be given once and offer protection for life, others require booster shots and still may wear off over time.

There may be something to the saying ‘ think thin ’. Misperceptions of being overweight may cause unhealthy dieting practices that result in weight gain.

The human brain is still in a state of rapid development during the teen years. Can using marijuana disrupt normal brain growth? A recent study followed a group of teens for 15 years to see how marijuana affected their mental health.

The number of U.S. children and teens with elevated cholesterol appears to be steadily declining over the past 20 years, a large study has found.

Beta amyloid is linked to brain cell death in Alzheimer’s disease. And recent lab studies found that a common food chemical may enhance its harmful effects.

We know that the spread of HIV/AIDS is not bound by borders. But it has hit some parts of the country harder than others – a startling fact when seen on a map.

Laughter is the best medicine, it is said, and smiling is good for the soul, but are there real physical health benefits to the act of smiling?