Alcohol is a depressant which lowers neuro transmission levels. This makes you do things you wouldnt normally do whilst sober. Some risks of aclohol are, Violent mood swings, depression, Liver disease, heart disease, sleep disorders, stroke, stomach bleeding, More prone to STDs, problems with managing diabetes, high bood pressure, and birth defects (which the child of a mother who consumes alcohol has a more elevated chance of getting.