1, onions are rich in nutrients, and the smell is spicy. Can stimulate the stomach, intestines and digestive gland secretion, enhance appetite, promote digestion, and onions do not contain fat, its essential oil contains a mixture of sulfur compounds that can reduce cholesterol, can be used to treat indigestion, loss of appetite, food accumulation and internal arrest.
2, onions are the only known to contain prostaglandin A. Prostaglandin A can dilate blood vessels. Prostaglandin A can dilate blood vessels, reduce blood viscosity, and thus will produce lower blood pressure, can reduce peripheral blood vessels and increase coronary blood flow, prevent thrombosis. Against the role of catecholamines and other pressure-raising substances in the body, but also to promote the excretion of sodium, thereby reducing blood pressure, regular consumption of hypertension, hyperlipidemia and cardiovascular and cerebral vascular patients have health effects.
3, the onion contains a high amount of selenium with anti-cancer effects.