Papaya May Slow Cancer Growth in a Variety of Tumors

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In research published in the February issue of the Journal of Ethnopharmocology researchers from the University of Florida and colleagues in Japan concluded that papaya leaf extract has a dramatic anti-cancer effect against tumors of the breast, cervix, liver, lungs, and pancreas. They exposed 10 different types of cancer cell cultures to four strengths of papaya leaf extract and measured the effect after 24 hours. They said papaya slowed the growth of the tumors in all of the cultures and the effects were strongest when the cancer cells received large doses of papaya leaf tea. The extract does not have any toxic effect like many cancer therapies and is effective by boosting the production of key signaling molecules called Th1-type cytokines that help regulate the immune system. They believe further researchers may discover therapies that can use the immune system to fight cancer.
They also said their results are consistent with those in indigenous populations in Australia and Vietnam.

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