Miami ? Heat center Alonzo Mourning has been receiving treatment for anemia, which he says was caused by his kidney disease. Still, Mourning has said several times he intends to play this coming season and beyond.

Mourning, 32, said anemia contributed to his lack of energy early last season. He was diagnosed during the season, but a Heat official and an associate of Mourning said Saturday they were uncertain exactly when that was.

Anemia can cause fatigue because the body lacks enough red blood cells to carry oxygen from the lungs to tissues and organs. Mourning this week launched a national campaign, Rebound From Anemia, to help chronically ill patients.

During last season, Mourning began taking Procrit to treat the anemia. He also continues taking medication for focal glomerulosclerosis, his kidney disease which remains in remission.