Meth effects on the Brain

According to Inaba & Cohen (2011), Meth manufacturing can be as simple as "At a local hardware store, a street chemist can get rock salt, battery acid, red phosphorus road flares, iodine, anhydrous ammonia, pool acid, mason jars, coffee filters, and plastic tubing to help in the manufacturing"(Inaba & Cohen, 2011 p.3.23). It can even be done a stovetop using sedated pills or cold pills (Inaba & Cohen, 2011). It is because of all these combinations of chemicals including lack of sleep, poor diet, and prolonged use results in altered brain chemistry. 
Furthermore, Inaba & Cohen (2011) revealed that, "In a study of 22 heavy users of methamphetamine, researchers found disturbing evidence that the brains of heavy users had an average loss of 11.3% of their limbic gray matter, particularly the hippocampus"(Inaba & Cohen, 2011p.3.25).
This find is quite interesting since as a nurse I'm not able to see the irreversible brain damage caused by the use of meth, although I am able to see the physical consequences caused by brain damage. Below I found a website with these facts and brain scan images that shows how the brain is affected. 

References:

Inaba, D., & Cohen, W. E. (2011). Uppers, downers, all arounders: Physical and mental effects of psychoactive drugs. Ashland, OR: CNS Publications.

Meth effects on Body. (n.d.). Retrieved from http://www.anti-meth.org/brainbody.html

Meth Faces. (n.d.). Retrieved from http://www.anti-meth.org/photos2.html