Jackfruit contains substances called phytochemicals, such as flavonoids, saponins, and tannins.
According to the American Institute for Cancer Research, many phytochemicals have antioxidantproperties, which means that they may help to counter the effects of free radicals.
Free radicals are highly reactive molecules that occur naturally in the body and can damage cells. This damage, known as oxidative stress, may play a role in the development of several chronic diseases, including cancer.
Phytochemicals may also prevent new blood vessels from growing around cancerous cells. A lack of blood vessels reduces the cells' blood supply and growth.