Eating purple sweet potato in winter helps prevent diseases

Edited and translated by Du Mingming, People's Daily Online

1. The selenium and zinc content in purple sweet potato is three to eight times higher than normal sweet potatoes, making it a top anti-cancer food.

Selenium is an essential component of several antioxidant enzymes that help prevent cancer. Zinc is a component or activator of many antioxidant enzymes, which can prevent free radical damage and maintain normal immune functions of human body.

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