Capsaicin may be a cancer fighter. It is theorized that capsaicin works at the cellular level to inhibit tumor growth. When a cell in the body becomes damaged (say with cancer), the healthy body orders it to commit “cell suicide” by undergoing programmed cell death or apoptosis. Programmed cell death protects the body by forcing abnormal, diseased cells out of existence. Tumors grow when cells somehow get around this programmed cell death—and capsaicin appears to force these cells to undergo apoptosis.