Methamphetamine abuse also has been shown to have negative effects on non-neural brain cells called microglia. These cells support brain health by defending the brain against infectious agents and removing damaged neurons. Too much activity of the microglial cells, however, can assault healthy neurons.

Other serious effects can include insomnia, confusion, hallucinations, anxiety and paranoia.

Thus, drug users can experience a severe “crash” or physical and mental breakdown after the effects of the drugs wear off.

When taken, meth and crystal meth create a false sense of well-being and energy, and so a person will tend to push his body faster and further than it is meant to go.