1. Green pepper. Sweet potato leaves are rich in vitamin A, which has antioxidant effects, can promote metabolism, anti-aging, and remove wrinkles; green peppers contain substances that destroy vitamin A, and eating them together with sweet potato leaves will destroy the vitamin A in the sweet potato leaves and reduce the sugar content of the sweet potato. The nutrition of leaves causes the loss of nutrients.

2. Persimmon. Eating sweet potato leaves and persimmons together can cause excessive gastric acid secretion in the human body. Moreover, after the biochemical reaction between sweet potato leaves and persimmons occurs, the fruit acid will condense and form hard lumps that accumulate in the body. After a large amount of accumulation, it will cause gastric bleeding and gastric ulcer.

3. Eggs. Sweet potato leaves and eggs are mutually exclusive foods. Eggs contain a lot of cholesterol and protein, which can react with the tannic acid in sweet potato leaves and cause abdominal pain.

4. Crab. Eating sweet potato leaves and crabs together will form stones in the body, causing various stone diseases and causing serious impact on human health.