People who are dependent on caffeine tend to score higher on tests of impulsiveness and sensation-seeking than nondependent adults. The same is true of people who use more dangerous drugs than caffeine.

College drinkers imbibe alcohol in different patterns during the school year, with some, for example, drinking heavily only during the holidays and others steadily increasing their consumption throughout the year.

Stages-of-change research has been used to develop dozens of behavior change programs, including HIV prevention, to help people live longer, healthier lives.

Adolescents change their attitudes about smoking (and become smokers) because of the power of peer pressure. Researchers quickly realized that if they could inoculate children against pro-smoking arguments, they might be able to reduce the chances that children would become smokers.

Addiction begins with the voluntary decision to use drugs. As one uses a drug repeatedly over time, control over its use decreases dramatically, through a combination of processes, including a series of brain changes.

One central tenet of Alcoholics Anonymous is: "We are without defense against the first drink." That is to say, consuming even a small amount of alcohol can easily lead to a full-blown relapse. But why does consuming a small amount of a drug cause alcohol-experienced individuals to crave more?

A new study finds that heavy drinking, in itself, doesn’t predict a greater chance of dissatisfaction developing in a marriage. Rather, it’s whether there’s a discrepancy between how much each spouse drinks.

Suffering traumatic stress can affect your emotions as well as your body, and can cause a cycle that makes it seem like the body and mind are working against one another, worsening symptoms like pain and fatigue. There are things you can do to help yourself.

Recent research shows that drug abuse alters cognitive activities such as decision-making and inhibition, likely setting the stage for addiction and relapse.

Anger is a completely normal, usually healthy, human emotion. But when it gets out of control and turns destructive, it can lead to problems. This article is meant to help you understand and control anger.