Meth, short for methamphetamine, is a powerful and highly addictive central nervous system stimulant. It is a synthetic drug that affects the brain by increasing the release of dopamine, a neurotransmitter associated with pleasure and reward. Meth can be found in various forms, including powder and crystal, and is often smoked, snorted, or injected. The use of meth can lead to severe health issues, including addiction, cardiovascular problems, and mental health disorders. Long-term use can cause significant changes in brain structure and function, leading to cognitive deficits and emotional disturbances. Treatment for meth addiction often involves behavioral therapies and support groups.