2, onions are nutritious, and the smell of pungent, can enhance appetite, promote digestion;

3, onions are known to be the only one containing prostaglandin A, regular consumption of high blood pressure, high blood cholesterol and cardio-cerebral vascular disease have a health care effect;

4, onions have a certain effect on the mind;

5, onions contain a substance called inflammation "oakley saxifrage", which is one of the most effective natural anticancer substances known;

5, onion contains a substance known as "oakleaf flavonoids". p>5, onions contain a kind of inflammatory "oak skin yellow pigment" substances, which is currently known as one of the most effective natural anticancer substances;

6, onions contain trace elements of selenium is a strong antioxidant, with anti-cancer and anti-aging effect;

7, onions also contain a certain amount of calcium, can help prevent osteoporosis, and can help prevent and control osteoporosis. helps to prevent and control osteoporosis.