Medicine: Speed and Strokes

The elderly are most often victims of strokes—the circulation stoppages in the brain that can cause paralysis and death. Yet for five years doctors at the University of Southern California Medical Center have been noticing an increase in young stroke victims and looking for an explanation. Now they have found one. Reporting in the journal Radiology, a U.S.C. research team has disclosed evidence that methamphetamine, or "speed," one of the most widely used of the current "pop" drugs, can cause deterioration of the small blood vessels of the brain.

Dye Path. A link between amphetamines and circulatory problems was first suggested in...

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