There is no such thing as 7 contraindications to eating blueberries. Blueberries as a common fruit, its consumption is not similar to the drug contraindication, blueberry allergies and intolerance of the population is also very small. Every 100 grams of blueberries there are 57 calories, which contains 9 grams of sugar, 2.4 grams of dietary fiber, 0.7 grams of protein. Fat 0.3 grams, so the main calories of blueberries come from carbohydrates, while blueberries contain some vitamins and minerals. Blueberries contain high levels of anthocyanins. Anthocyanin is a more than very strong antioxidant. Its antioxidant effect is stronger than vitamin C and vitamin E. It scavenges free radicals in the body and prevents cell damage and aging caused by lipid peroxidation. Due to the limited dosage, it does not have the same effect as drugs, but it is still beneficial to the body. Blueberries also contain very good water-soluble dietary fiber – pectin, which can promote intestinal peristalsis. Although blueberries are nutritious, they need to be consumed in moderation and not in excess, as this can lead to dietary imbalance. Blueberries should not be consumed by people who are allergic and intolerant to blueberries.