The Food and Agriculture Organization of the United Nations has announced the results of a study showing that HIV/AIDS is causing a "long-term decline" in subsistence agricultural production in Mozambique and across sub-Saharan Africa, Agence France-Presse reports. The study, which was based on interviews with about 90 people in Mozambique in 2003, showed that as HIV-positive people become too ill to farm, they stop planting many crops.