How meth affects the brain?

Damage to the circulatory system of the brain: Use of methamphetamine also affects the veins, arteries, and capillaries in the central nervous system via issues associated with increased blood pressure, weakening veins and arteries, leaving them open to clots, and scarring them. read more

Methamphetamine increases the amount of the natural chemical dopamine in the brain. Dopamine is involved in body movement, motivation, pleasure, and reward (pleasure from natural behaviors such as eating). read more

Methamphetamine can be a neurotoxin, since it can damage nerve terminals and eventually kill neurons—the cells that send and receive signals in the brain and nervous system. Effects can include memory problems, psychosis, and sexual dysfunction. read more