Seven functions of onion
1. Calcium supplementation and bone strengthening
Onions are rich in calcium, comparable to vegetables rich in calcium such as rape and cabbage, and also contain magnesium and potassium. The ratio of calcium to phosphorus is also appropriate, and calcium supplementation is easy to absorb.
2. Improve the intestinal environment
Onion, like burdock, asparagus and other vegetables, contains oligosaccharides, which are not digested by stomach and small intestine, but are decomposed in large intestine as food for beneficial bacteria such as Bifidobacterium.
3. Promote weight loss and treat constipation
Onions are rich in dietary fiber, which increases satiety and promotes defecation. In addition, the bifidus factor produced by onion is also beneficial to intestinal patency.
Get rid of greasy food
Cooking some high-fat meat dishes, such as steak, braised pork and grilled fish with onion, can not only remove the fishy smell, but also relieve the greasy feeling and reduce the body's absorption of fat.
disinfect
Onion contains volatile propylene sulfide, which has bactericidal and bacteriostatic effects and can disperse pests, so onion is a vegetable with zero pesticide residue.
Prevent catching a cold
Onions are slightly spicy and warm, and have the functions of dispelling cold and preventing colds, and relieving symptoms such as stuffy nose and runny nose caused by colds.
7. Reduce the body's inflammatory response
Prostaglandin A contained in onion is a strong vasodilator, which helps to reduce inflammatory reaction, regulate blood pressure and reduce blood viscosity.
Onions are very common ingredients in daily life. Some people seldom eat it if they don't like its taste. In fact, onions are all treasures. Not only has high nutritional value, but also has a good function of reducing weight and lipid. In short, it is a rare health food.
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Onions also have these medicinal values.
1. It can halve the frequency of asthma attacks.
Onions contain at least three anti-inflammatory chemicals, which can treat asthma. Onions can inhibit the movement of histamine, a chemical that can cause allergic symptoms of asthma. Studies by German experts show that onions can reduce the frequency of asthma attacks by about half.
For the elderly who have many problems gradually, the use value of onions can not be ignored. Its effects of preventing gastric cancer, invigorating stomach and moistening intestines and preventing osteoporosis are favored by the elderly. Taking medicine is very painful. Have some onions.
2. Both raw food and cooked food can treat diabetes.
Sulfonylurea contained in onion has a certain hypoglycemic effect and has been used to treat diabetes. Modern medicine has also confirmed that onion can really lower blood sugar, and it has a good effect whether eaten raw or cooked.
3. Sterilize and promote digestion to prevent gastric cancer.
Onion extract also has bactericidal effect, which can improve gastrointestinal tension and enhance digestive tract secretion. There is a peptide in onion that can reduce the incidence of cancer. A survey conducted by researchers in a high incidence area of gastric cancer in Shandong Province shows that the more onions you eat, the lower the incidence of gastric cancer.
4. Prevent the increase of blood lipid and arteriosclerosis.
The compounds contained in onion can prevent platelet aggregation, accelerate thrombolysis, prevent the increase of blood lipid caused by high-fat diet and prevent arteriosclerosis. Therefore, when you enjoy high-fat food, you'd better mix it with some onions.
5. Invigorate stomach and moisten intestines to treat anorexia
Onion has expectorant, diuretic, stomach invigorating, intestine moistening, detoxicating and insecticidal effects, and can be used to treat anorexia, constipation, dysentery, enteritis and other diseases. Prostaglandin A contained in onion also has a significant antihypertensive effect.
6. Eating raw can prevent high cholesterol.
Eating raw onions or drinking onion juice every day can increase the good cholesterol of patients with heart disease and help prevent atherosclerosis. However, the more onions are cooked, the less effective they are.