Why is weed bad
for you? : people who started smoking weed before age 16 suffer from brain
damage, according to a study of McLean Hospital , which depends on the Harvard
Medical School . Smokers
in adulthood would be less good , especially for planning, or reasoning on the
abstract.According to FoxNews , the study involved 33 smokers and 26 nonsmokers. Among the tests, different exercises with maps and changing the rules as you : smokers were much less successful than others, having difficulty sustaining attention , according to the Harvard Gazette . They made more errors than double non -smoking.