Alcoholism
Proclivity to alcoholism may be partially genetic. Persons who have this proclivity may have an atypical biochemical response to alcohol, although this is disputed.
Alcoholism can lead to malnutrition because it can alter digestion and the metabolism of most nutrients. Severe thiamine deficiency is common in alcoholism due to deficiency of folate, riboflavin, vitamin B6, and selenium ; this can lead to Korsakoff's syndrome. Alcoholism is also associated with a type of dementia called Wernicke-Korsakoff syndrome, which is caused by a deficiency in thiamine (vitamin B1).
Muscle cramps, nausea, loss of appetite, nerve disorders, and depression are common symptoms of alcoholism. Osteoporosis and bone fractures may occur due to deficiency of vitamin D.
Read more about this topic: Alcohol Consumption, Effects of Alcohol On Health