Onions are rich in calcium, phosphorus, iron, vitamin B1, vitamin C, carotene, niacin, prostaglandin A, diallyl disulfide and sulfur amino acids, among which sulfur amino acids have the effect of lowering blood lipids and blood pressure. Prostaglandin A has the effects of dilating blood vessels, lowering blood viscosity, and preventing thrombosis. Onions are also rich in trace elements selenium, which can reduce the incidence of cancer. The health care function of adults eating 50-80 grams of onions a day is very significant. It really means "a queen of vegetables."
The benefits of eating more onions:
1, sterilization, anti-cold. Onion contains phytoncide such as allicin, has a strong bactericidal ability, can effectively resist influenza virus, prevent colds. When this phytoncide is excreted through the respiratory tract, urinary tract, and sweat glands, it can stimulate the secretion of cell walls at these locations, and therefore has the effects of phlegm, diuresis, sweating, and antibacterial and antiseptic functions.
2, to promote gastrointestinal motility, to help digestion onion contains onion garlic, a rich aroma, processing, because of the pungent smell often makes people cry. It is this special smell that stimulates the secretion of gastric acid and increases appetite. Animal experiments have also proved that onion can increase the gastrointestinal tract tension, promote gastrointestinal motility, and thus play an appetizing role, has a significant effect on the loss of appetite caused by atrophic gastritis, gastric insufficiency, indigestion and so on.
3, cancer prevention The anti-cancer effect of onion comes from its rich in selenium and quercetin. Selenium is an antioxidant that stimulates the body's immune response, thereby inhibiting the division and growth of cancer cells, while also reducing the toxicity of carcinogens. Quercetin can inhibit the activity of cancer cells and prevent the growth of cancer cells. A survey showed that people who eat onions are 25% less likely to suffer from stomach cancer than those who do not eat, and 30% less on stomach cancer.
4, blood pressure lowering onion is the only plant containing prostaglandin A, onion is the only known food containing prostaglandin A, is a natural blood thinner, prostaglandin A can dilate blood vessels, lower blood viscosity, which will produce lower blood pressure, Can reduce peripheral blood vessels and increase coronary blood flow, prevent thrombosis. The role of vasopressor substances such as catecholamines in the human body can also promote the excretion of sodium salts, thereby lowering blood pressure. Regular consumption of foods has a health effect on hypertension, hyperlipidemia, and cardiovascular and cerebrovascular diseases.
5, hypoglycemic onion also has a hypoglycemic effect, because the onion contains hypoglycemic agents similar to the metal sulfadicin, and in the human body can generate a powerful diuretic effect of picolin. Diabetic patients can eat 25~50g of onion at every meal to have a good effect of lowering blood sugar and diuresis.
6, to improve constipation Sulfur ingredients onion in the large intestine and protein, or bacteria in the intestine to form hydrogen sulfide, can promote bowel movements. Abundant soluble dietary fiber can stimulate the intestines to make exercise more vigorous, and oligosaccharides can also inhibit the proliferation of bad bacteria in the intestine, effectively improving the common symptoms of constipation in girls.
Other effects
Onion contains flavonoids can reduce the viscosity of platelets, eat onion can prevent thrombosis, reduce the probability of myocardial infarction and cerebral thrombosis.
Onion contains volatile oil can help sex, the elderly often eat onions can improve the quality of sexual life.
Onion can increase the bone density of experimental mice, and eating onions can prevent osteoporosis.
Onion is rich in vitamin C, niacin, they can promote the formation of interstitial cells and damage the repair of cells, make the skin smooth, ruddy and elastic, with a cosmetic effect. Containing sulfur, vitamin E, etc., can prevent the formation of lipofuscin pigments from unsaturated fatty acids and prevent age spots.
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