Alcohol is a depressant which, used in any dose, reduces coordination and alertness, making activities such as driving, dangerous. Large doses of alcohol can cause unconsciousness, hypothermia, respiratory arrest, and death. Physical complications of chronic alcohol use include liver damage, hepatitis, altered brain cell functioning, gastritis, heart disease, circulatory problems, peptic ulcers, some forms of cancer, premature aging, impotence, infertility, reproductive disorders, neurological disorders, and high blood pressure. The consumption of alcohol by pregnant women may cause abnormalities, such as fetal alcohol syndrome, in their babies.