What are other health effects of methamphetamine?
People who inject methamphetamine are at increased risk of contracting infectious diseases such as HIV and hepatitis B and C. These diseases are transmitted through contact with blood or other bodily fluids. Methamphetamine use can also alter judgment and decision-making leading to risky behaviors, such as unprotected sex, which also increases risk for infection.
Methamphetamine use may worsen the progression of HIV/AIDS and its consequences. Studies indicate that HIV causes more injury to nerve cells and more cognitive problems in people who have HIV and use methamphetamine than it does in people who have HIV and don’t use the drug.1Cognitive problems are those involved with thinking, understanding, learning, and remembering.
Long-term methamphetamine use has many other negative consequences, including:
- extreme weight loss
- severe dental problems (“meth mouth”)
- intense itching, leading to skin sores from scratching
- sleeping problems
- violent behavior
- paranoia—extreme and unreasonable distrust of others
- hallucinations—sensations and images that seem real though they aren’t
In addition, continued methamphetamine use causes changes in the brain’s dopamine system that are associated with reduced coordination and impaired verbal learning. In studies of people who used methamphetamine over the long term, severe changes also affected areas of the brain involved with emotion and memory.2 This may explain many of the emotional and cognitive problems observed in those who use methamphetamine.
Although some of these brain changes may reverse after being off the drug for a year or more, other changes may not recover even after a long period of abstinence.3 A recent study even suggests that people who used methamphetamine have an increased the risk of developing Parkinson’s disease, a disorder of the nerves that affects movement.4
Are there health effects from exposure to secondhand methamphetamine smoke?
Researchers don’t yet know whether people breathing in secondhand methamphetamine smoke can get high or have other health effects. What they do know is that people can test positive for methamphetamine after exposure to secondhand smoke.5,6 More research is needed in this area.
Can a person overdose on methamphetamine?
Yes, a person can overdose on methamphetamine. An overdose occurs when the person uses too much of a drug and has a toxic reaction that results in serious, harmful symptoms or death.
Methamphetamine overdose can lead to stroke, heart attack, or organ problems—such as kidney failure—caused by overheating. These conditions can result in death.
How can a methamphetamine overdose be treated?
Because methamphetamine overdose often leads to a stroke, heart attack, or organ problems, first responders and emergency room doctors try to treat the overdose by treating these conditions, with the intent of:
- restoring blood flow to the affected part of the brain (stroke)
- restoring blood flow to the heart (heart attack)
- treating the organ problems
Is methamphetamine addictive?
Yes, methamphetamine is highly addictive. When people stop taking it, withdrawal symptoms can include:
- severe depression
- intense drug cravings