Methamphetamine users who described themselves as impulsive were more likely to have started taking the drug at an earlier age, a study of more than 150 users showed. Both attentional and motor ...

While tens of thousands continue to die annually from opioid overdoses, best-selling author Sam Quinones says that another, potentially more devastating addiction epidemic is underway in America, ...

Methamphetamine, or meth, is a powerful stimulant that can make you feel more awake and active. Scientists in the early 20th century developed it in an effort to improve the medication amphetamine.