This paper explores the organic causes of amnesia, including Alzheimer's disease, with reference to shortage of ACH and Ronald Reagon who developed the disease in 1994. It also examines alcohol abuse, Korsakoff psychosis and the deficiency of thiamine (vitamin B1), hippocampal damage due to encephalitis and lesions within the brain.
From the Paper:
"Prolonged low levels or complete lack of thiamine, which the body uses to convert carbohydrates into energy, eventually affects the brain and nervous system. Low levels of thiamine within chronic alcoholics, is due to what could be explained as malnutrition. Most heavy drinkers have poor eating habits, usually supplementing food with alcohol, hence nutrition is overly inadequate and essential vitamins the body requires are not received. Alcohol furthermore can inflame the lining in the stomach and delay the body's natural ability to absorb key vitamins it does receive. Over time this prolonged deficiency in thiamine, significantly damages important areas of the brain critical for memory, such as the thalamus and the basal forebrain."