“…Although some studies have determined that low‐to‐medium doses of ethanol have neuroprotective effects and can reduce the risk of dementia (including Alzheimer's disease), 1 ethanol is a direct neurotoxin, and long‐term mass abuse can independently cause various neuropathological changes and alcoholic dementia 2 . In addition, ethanol can affect cognition in a number of indirect ways, including withdrawal (alcohol‐withdrawal syndrome), hypoglycemia, hepatic failure, and nutritional deficiency, leading to cerebellar degeneration, amblyopia, polyneuropathy, Wernicke's encephalopathy, and pellagra 3 …”