2. First of all, blueberries are rich in conventional nutrients such as protein, vitamins, minerals and trace elements. It has the effects of preventing cranial nerve aging, protecting eyesight, strengthening heart, resisting cancer, softening blood vessels and enhancing human immunity. And the nutrient content is high.
3. Moreover, blueberries are rich in anthocyanins, which can activate the retina, strengthen vision and prevent eyeball fatigue.