Moving from junk food to another kind of junk, once again Seixas attacks a health problem, bringing complex material down to elementary level. Psychoactive drugs range from hallucinogens to alcohol; from stimulants to sedatives. Seixas explains why they are illegal and dangerous and how they have been approached for millenia--the Egyptians, Greeks, and Arabs thought they had magical curative powers, and indeed they do. But they also have problems that grow with increasing tolerance. Feelings are paid ample attention, including why children might be tempted to use drugs. The other side is given graphic dimensions, however: through graspable examples, children learn how their intellectual and physical capacities will be diminished--e.g., ""Your eyes and hands will not work together""; ""Too much caffeine can make you jittery."" Seixas adds advice about ways to say no, giving reasons (""I'm playing ball today"") or not. Cheerful yet realistic, informative yet interesting: another winning volume in Seixas' ""What It Is, What It Does"" series.