CNN Weed Dr. Sanjay Gupta Reports December 21, 2014 04:28:00
Those who start smoking early. >> maybe there's underlying white matter connectivity differences. >> that's your concern, it sounds like, that those highways, those white matter highways are just more disrupted in people who start smoking early. >> that's what we see. >> perhaps not surprising given what we know about the young developing brain. >> that's a very delicate time in brain development, and that's not a good time to be taking any drugs. >> preliminary research shows that early onset smokers are slower at tasks, have lower iqs later in life, higher risk of strokes, and increased inci...