Onion has hypoglycemic effect, and it contains substances similar to sulfonylureas, which can act on islet β -cells and promote the synthesis and secretion of insulin. In addition, the sulfonylurea butyric acid contained in onion can increase the body's consumption of blood sugar, thus achieving the purpose of lowering blood sugar; These ingredients are easily decomposed by high temperature, so it is best to choose raw onions!
Onion is the only plant that contains prostaglandin A, which can effectively dilate blood vessels, reduce peripheral vascular resistance, increase coronary blood flow and promote myocardial blood supply, and has good benefits for patients with hypertension and coronary heart disease.
Onion is rich in flavonoids, which have been proved to have excellent preventive and therapeutic effects on cardiovascular and cerebrovascular diseases. They can inhibit platelet aggregation, reduce the content of cholesterol in blood and reduce the viscosity of blood, and have a good preventive and therapeutic effect on thrombotic diseases.
In addition, onion also has antibacterial and antivirus effects, and has certain resistance to infectious diseases caused by bacteria or viruses;
Note: Onion is only a vegetable and cannot be used as a substitute for drug treatment!
Onion does have many nutritional effects, and it is rich in biotin, carotene, vitamin C, quercetin, prostaglandin A and selenium, which makes it have good health care effects. Let's take a look at the benefits of eating onions often.
1. Prevent colds. Onions have a pungent smell, which has the function of dispersing cold, resisting influenza virus, preventing colds, and relieving symptoms such as stuffy nose and runny nose caused by colds.
2. Digestion and greasy. The pungent smell of onion can stimulate the secretion of digestive glands, stimulate appetite and promote digestion. Onions can also remove fishy smell and greasy.
3. Lowering blood pressure and lowering blood fat. Adenosine A contained in onion can dilate blood vessels, reduce blood viscosity and prevent thrombosis. Therefore, patients with high blood pressure and cardiovascular and cerebrovascular diseases can often eat onions.
4. Supplement calcium. Onions are rich in calcium, magnesium and potassium, and the ratio of calcium to phosphorus is also appropriate, which is beneficial to human digestion and absorption.
5. Runchang laxative, onions are rich in dietary fiber, which can promote gastrointestinal peristalsis and prevent constipation. In addition, the bifidus factor produced by onion is also beneficial to intestinal patency.
6. Anti-cancer and anti-cancer, quercetin contained in onion can inhibit the activity of cancer cells and prevent the growth of cancer cells. The selenium contained in onion has a strong antioxidant effect and can delay the aging of the body.
7. Disinfection and sterilization. Onions contain volatile propylene sulfide, which has bactericidal effect.
8. Reduce inflammation. Prostaglandin A contained in onion is a strong vasodilator, which is beneficial to reduce the inflammatory reaction of the body.