There are many types of the brain damage that meth can cause. Meth can cause depression because meth use can damage systems in the brain that regulate emotions and the ability to experience pleasure. Meth use impairs the frontal lobe of the brain which governs judgment, impulse control and the ability to determine consequences. Meth use damages short term and long term memory by changing the structure of the brain and it can increase aggression because meth overstimulates the amygdala which is the emotion center of the brain and compromises brain circuits needed to control impulse behaviors which increases aggression. Long-term meth use can cause delusions and hallucinations in which people hear voices or see things that are not really