2. Onions are nutritious and spicy. It can stimulate the secretion of stomach, intestine and digestive gland, stimulate appetite and promote digestion. Onion contains no fat, and its essential oil contains a mixture of sulfur-containing compounds, which can reduce cholesterol and can be used to treat dyspepsia, anorexia and dyspepsia.
Onion is the only one that contains prostaglandin A at present. Prostaglandin A can dilate blood vessels and reduce blood viscosity, so it can lower blood pressure, reduce peripheral blood vessels, increase coronary blood flow and prevent thrombosis. It can resist the action of pressor substances such as catecholamine in human body, promote the excretion of sodium salt, and thus lower blood pressure. Regular consumption has a health care effect on patients with hypertension, hyperlipidemia and cardiovascular and cerebrovascular diseases;
4. Onion has a certain refreshing effect, which can help cells make better use of glucose, lower blood sugar and provide heat energy for brain cells. It is a good diet vegetable for patients with diabetes and listlessness;
Onion contains a substance called phlogiston 9, which is one of the most effective natural anticancer substances known at present. It can prevent the variation of biochemical mechanism in vivo and control the growth of cancer cells, thus having anti-cancer and anticancer effects;
6. Selenium, a trace element contained in onion, is a strong antioxidant, which can scavenge free radicals in the body, enhance the vitality and metabolic ability of cells, and has the functions of preventing cancer and resisting aging;
7. Onions also contain a certain amount of calcium. In recent years, Swiss scientists have found that eating onions regularly can improve bone density and help prevent osteoporosis;
8. Onions contain phytoncide, such as allicin, which has strong bactericidal ability. Chewing raw onions can prevent colds.
9. In addition, eating onions has a certain therapeutic effect on recurrent oral ulcers.