Hear about the devastating impact of addiction and substance abuse from Dr. Stephen Dewey (sdewey@nshs.edu), neuroscientist at The Feinstein Institute for Medical Research. Parents and students should take note of the impact of caffeine (very high doses could kill you), cocaine (lose the ability to feel pleasure from anything), marijuana (permanently alters the brain), heroin (overdose victims die a painful death from suffocation), methamphetamine (extremely addictive, lethal and in just about every school district).