Methamphetamine, often called meth or crystal meth, is a powerful stimulant that affects the brain and body quickly. What may start as a burst of energy or focus can turn into serious health problems over time. Sleep disappears. Appetite drops. Mood and behavior begin to shift. In the United States, meth use has grown in recent years.
The National Institute on Drug Abuse reports that more than 2.5 million people reported methamphetamine use in the past year, and stimulant overdose deaths have increased during the last decade. Understanding the side effects of meth and the symptoms of meth use can help people recognize when drug use is becoming dangerous.