Methamphetamine addiction has a way of looping back on itself. A rush of pleasure pulls you in, cravings follow, and the brain learns that the drug is the fastest route to reward. Yet scientists still ...

THE UPCOUNTRY, S.C. - Erika Haas calls it "the pull." When Haas was 24, her doctor prescribed OxyContin for back pain. She quickly progressed to heroin - and then to methamphetamines. Now 30 and in ...

Heroin is one of the most addictive drugs in the world. It is an opioid that floods the brain with dopamine, a chemical that helps us feel pleasure. This causes a strong feeling of happiness, ...

We now know that chronic substance use—of both alcohol and drugs—actually changes the chemistry and structure of the brain. That sounds serious, and it is, but there are some positives and some ...