Wednesday, June 1, 2011

HIV/AIDS reduces food intake

HIV/AIDS reduces food intake

People with HIV/AIDS often do not eat enough because:

  • the illness and the medicines taken for it may reduce the appetite, modify the taste of food and prevent the body from absorbing it;
  • symptoms such as a sore mouth, nausea and vomiting make it difficult to eat;
  • tiredness, isolation and depression reduce the appetite and the willingness to make an effort to prepare food and eat regularly;
  • there is not enough money to buy food.

HIV/AIDS reduces the absorption of food

Food, once eaten, is broken down by digestion into nutrients. These nutrients pass through the gut walls into the bloodstream and are transported to the organs and tissues in the body where they are needed. One of the consequences of HIV and other infections is that since the gut wall is damaged, food does not pass through properly and is consequently not absorbed.

Diarrhoea is a common occurrence in people with HIV/AIDS. When a person has diarrhoea the food passes through the gut so quickly that it is not properly digested and fewer nutrients are absorbed.

Reduced food intake and absorption lead to weight loss and malnutrition.

HIV/AIDS AFFECTS WEIGHT

HIV/AIDS AFFECTS WEIGHT

When a person does not eat enough food, or the food eaten is poorly absorbed, the body draws on its reserve stores of energy from body fat and protein from muscle. As a result, the person loses weight because body weight and muscles are lost.

The weight loss may be so gradual that it is not obvious. There are two basic ways to discover whether weight is being lost.

  • Weigh the person on the same day once a week and keep a record of the weight and date (see sample sheet in Annex 4). For an average adult, serious weight loss is indicated by a 10 percent loss of body weight or 6-7 kg in one month. If a person does not have scales at home it might be possible to make an arrangement with a chemist, clinic or local health unit to weigh him or her.
  • When clothes become loose and no longer fit properly.

If a person loses weight he or she needs to take action to increase weight to the normal level.