In the eyes of Chinese medicine, grains are not only a kind of food, but also a kind of health-preserving material. The benefits of eating whole grains regularly include preventing diseases. Whole grains are rich in vitamin C, which helps people to relieve fatigue and prevent colds. It contains iron which can promote digestion and absorption. Anti-cancer effect. Cereals are rich in amino acids, and can also make antibiotics to enhance immunity. Other functions. Unsaturated fatty acids contained in whole grains can lower blood pressure, so the elderly can eat more whole grains.