Teens who routinely smoke marijuana risk a long-term drop in their IQ, a new study suggests.
People are inventing so many new ways to get high that lawmakers can't seem to keep up.
Addiction isn't just about willpower. It's a chronic brain disease, says a new definition aimed at helping families and their doctors better understand the challenges of treating it.
Addiction isn't just about willpower. It's a chronic brain disease, says a new definition aimed at helping families and their doctors better understand the challenges of treating it.
Uh-oh, the new year's just begun and already you're finding it hard to keep those resolutions to junk the junk food, get off the couch or kick smoking. There's a biological reason a lot of our bad habits are so hard to break _ they get wired into our brains.

Uh-oh, the new year's just begun and already you're finding it hard to keep those resolutions to junk the junk food, get off the couch or kick smoking. There's a biological reason a lot of our bad habits are so hard to break _ they get wired into our brains.
New treatments for addiction to heroin or narcotic painkillers promise longer-lasting relief that may remove some day-to-day uncertainty of care: A once-a-month shot is now approved and a six-month implant is in the final testing phase.