Many other health risks are related to chronic meth abuse. A doctor who works at a San Francisco emergency room told me about the stream of meth addicts who come in with “blown-out”—literally ruptured—aortas. Addicts may cough up chunks of the lining of their lungs. Many meth addicts lose their teeth. Chronic meth use can cause Parkinson’s-like cognitive dysfunction, including deteriorating memory and mental acuity and physical impairment, including paralysis—results of meth-induced strokes.