Abstinence.
Anything that involves using syringes and needles. Smoking weed (with others who have AIDS) has a small risk, if they or you have wounds in mouth.
Acquired Immune Deficiency Syndrome (AIDS) or the presence of another immune deficiency greatly increases the risk of brain abscess
There are no drug interactions between alcohol and the birth control pill. Alcohol increases the risk of forgetting to take your pill.
Drinking in moderation lowers the risk of dementia, including Alzheimer's disease.
married couples
Consuming too much alcohol can temporarily impair thinking ability. Consuming alcohol regularly in moderation reduces the risk of developing senility and Alzheimer's disease.
Mainly, there is always the risk of (a) catching a dangerous disease, including AIDS (especially if you have many sex partners), and (b) getting pregnant (or getting your girl pregnant).
It gives you bad Brain Damage which can make you a little "coo coo" in the head.
to drink alcohol, the use of tobacco, or second hand smoke.
Moderate consumption of alcohol is associated with increased bone density and reduced risk of fractures caused by osteoporosis, according to research from 33 studies.
HIV/AIDS isn't that contagious, and there is very little risk of of catching it of someone unless there is a serious exchange of body fluids. Sharing needles and having sex can get you infected, but not everyday life. But a child getting born from a mother with HIV is at considerable risk.