Aside from the short-term effects of rapid breathing, irregular heartbeat, and increased blood pressure, meth usage increases the risk of contracting infectious diseases through injections and gravely affects decision-making with regard to entering risky behaviors.
Additionally, meth causes extreme weight loss, dental extractions, violence, and hallucinations. And over extended periods of time areas of the brain concerning emotion and memory can be affected. A recent study explains how methamphetamine users have an increased risk of Parkinson’s disease.