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What are the nutritional value of onion when it comes to onions, I'm sure you're no stranger. Onion is the most common dish. Onions, though cheap, are rich in nutrients. Onions are known abroad as the 'Queen of vegetables'. There are many advantages to eating onions. Onion can inhibit the growth of bacteria. Eating onion can prevent gastrointestinal infection. Eating onions can promote gastrointestinal peristalsis, help digestion, eating onions can improve our constipation. In addition, onion is low in fat, and rich in fiber, vitamins and minerals, which is a good diet.

Functions and functions of onion:

Onion is not only the most common and common vegetable, but also has many health functions. Recent medical research shows that the efficacy of onion is mainly manifested in the following eight aspects:

Onion has the function of dispersing wind chill, because onion bulb and leaf contain a kind of oil volatile substance called propylene sulfide, which has pungent and spicy taste. This substance can resist cold, resist influenza virus, and have strong bactericidal effect;

Onions are nutritious and spicy. It can stimulate the secretion of stomach, intestines and digestive glands, increase appetite and promote digestion. Onion does not contain fat. Its essential oil contains a mixture of sulfur compounds that can reduce cholesterol. It can be used for the treatment of dyspepsia, anorexia, and stop of food accumulation;

Onions are the only known to contain prostaglandin a. Prostaglandin A can dilate blood vessels and reduce blood viscosity, so it can reduce blood pressure, reduce peripheral blood vessels and increase blood flow of coronary artery, and prevent thrombosis. It can also promote the excretion of sodium salt, so as to reduce blood pressure. Regular consumption has health care effect on patients with hypertension, hyperlipidemia and cardiovascular and cerebrovascular diseases;

Onion has a certain refreshing effect. It can help cells to make better use of glucose, reduce blood sugar, and supply heat energy to brain cells. It is a good food therapy vegetable for patients with diabetes and mental retardation;

Onion contains a kind of substance named quercetin, which is one of the most effective natural anticancer substances. It can prevent the variation of biochemical mechanism in the body, control the growth of cancer cells, and thus has the effect of anticancer;

The microelement selenium contained in onion is a kind of strong antioxidant, which can eliminate the free radicals in the body, enhance the activity and metabolism of cells, and has the effect of anti-cancer and anti-aging;

In recent years, Swiss scientists have found that eating onions often can improve bone density and help prevent and treat osteoporosis;

Onion contains phytobactericide such as allicin, so it has strong bactericidal ability. Eating raw onions can prevent colds.