The most common way people are infected with HIV is by having sex with an infected person. You can't tell by looking at a person whether they have HIV, so you have to protect yourself -- and your sex partner.
and HIV Prevention
Don't have unprotected sex outside marriage or a committed relationship. If you or your partner has ever had unprotected sex -- or if either of you uses injected drugs -- the only way to be sure you don't have HIV is to get tested. Have two...
"Good nutrition is very important for people with HIV," says Brad Hare, MD, director of the HIV/AIDS clinic at San Francisco General Hospital. Without a healthy diet, your body will have a harder time recovering and fighting off infections.
When HIV Makes You Lose Weight
Unwanted weight loss related to HIV is less common than it once was, but it still happens. HIV itself -- as well as related problems and treatments -- can cause it. It's more common in people with untreated or severe disease, an infection, or a high viral load, which is a high concentration of the virus in the blood.
When you have HIV, things that can cause you to lose weight include:
The HIV virus itself.
HIV drugs, which dull your appetite, make food taste bad, or make it harder for your body to absorb nutrients.
Symptoms like nausea and mouth sores can make eating unpleasant.
Diarrhea and other digestive problems can make it harder to take in nutrients from foods.
Exhaustion can slow you down, keep you from grocery shopping, and limit your ability to prepare healthy meals.
If you have advanced disease, high levels of HIV virus in your blood, or other infections, you may need more calories.