Plants produce ellagic acid to protect themselves from microbiological infection and pests. Ellagic acid seems to have some anti-cancer properties. It can act as an anti-oxidant, and has been found to cause cell death in cancer cells in the laboratory. In other laboratory studies, ellagic acid seems to reduce the effect of estrogen in promoting growth of breast cancer cells in tissue cultures. There are also reports that it may help the liver to break down or remove some cancer-causing substances from the blood.
Some supporters have claimed these results mean that ellagic acid can prevent or treat cancer in humans. This has not been proven. Ellagic acid has also been said to reduce heart disease, birth defects, liver problems, and to promote wound healing.
What does it involve?
The highest levels of ellagic acid are found in cherries, blueberrys, acai, raspberries, strawberries, and pomegranates, especially when they are freeze-dried. Extracts from red raspberry leaves or seeds, pomegranates, or other sources are said to contain high levels of ellagic acid and are available as dietary supplements in capsule, powder, or liquid form. The best dose of these preparations is not known.
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