For some people two drinks a day can lead to problems while others can consume the same amount without any harmful effects. Recent studies suggest that problems with health can begin when more than two drinks per day are consumed. Excessive drinking over time can lead to tissue damage and disease. Alcohol has a toxic or irritating effect on cells and tissues. Also, many people who drink too much do not always follow a nutritious diet because alcohol reduces their appetite and replaces healthier foods.
Thiamine is essential for the body's normal use of carbohydrates.
Also, the nerves, muscles, heart, and brain need thiamine to function normally. Alcohol can also damage the lining of the small intestine and interfere with the absorption of nutrients from the small intestine. Alcohol decreases the amount of deep sleep, which may mean a less restful night's sleep. Also, drinking alcohol can make insomnia worse. Although it may help a person to go to sleep, as the drink wears off, the brain cells become more agitated and may cause an early awakening.