1. Purple sweet potato is rich in selenium and anthocyanins besides the nutrients of common sweet potato. Anthocyanin can prevent and treat 100 diseases, and is known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins and minerals.

2. Purple sweet potato has only one third of the calories of rice with the same weight, and contains almost no fat and cholesterol. Eating purple potato often is beneficial to human health and has a certain weight loss effect. In addition, purple sweet potato contains a substance similar to estrogen, which can effectively protect human skin and delay facial aging. So many foreign women regard purple potato as beauty food.

3, insist on eating purple potatoes, the body is healthier, and it can effectively resist the radiation of computers. The symptoms of patients with chronic gastrointestinal diseases have also been significantly alleviated.