Protein is involved in nearly every biological process of the human body.

Protein is involved in nearly every biological process of the human body. It builds muscle tissue and helps your immune system fight off infections. We need protein to keep organs like our heart and lungs working well and to keep ourselves strong and active. Studies have shown that HIV weight loss tends to reduce protein stores more quickly than simple starvation, and a major nutritional goal for HIV-infected individuals should be to build or maintain your muscle mass.

Carbohydrates and fat are important because HIV can increase the body's metabolic rate--causing us to use more calories to do the same work we did with less calories before becoming HIV positive.

Finally, if you're not eating enough to maintain your weight, you're probably not getting adequate amounts of the vitamins, minerals, and phytochemicals that our bodies need to produce energy, to help with many chemical reactions that we carry out automatically, and to help protect us from chronic diseases such as heart disease, cancer and high blood pressure. Depending on the medication you are taking, you may not be eating enough to absorb those medications properly and get them into your bloodstream where they can work effectively. Not getting enough of these essential nutrients can further weaken your immune system. Even though it is a good idea to take a multivitamin every day, you must remember that supplements cannot take the place of real food. That's why they're called supplements.