Onion Fresh in Red and Yellow Color

onions are rich in nutrients such as potassium, vitamin C, folic acid, zinc, selenium, and fiber. There are also two special nutrients -- quercetin and prostaglandin A.These two special nutrients give onions many health benefits that no other food can replace:

The prevention of cancer

The onion's cancer-fighting properties come from its rich selenium and quercetin content.Selenium is an antioxidant that stimulates the body's immune response, which inhibits the division and growth of cancer cells and reduces the toxicity of carcinogens.Quercetin, on the other hand, inhibits the activity of oncogenic cells and prevents the growth of cancer cells.People who regularly eat onions are 25 per cent less likely to develop stomach cancer and 30 per cent less likely to die from the disease, a study has found.

Maintain cardiovascular health

onions are the only vegetables known to contain prostaglandin A.Prostaglandin A can dilate blood vessels and reduce blood viscosity, thus lowering blood pressure, increasing blood flow in coronary arteries and preventing thrombosis.Quercetin, which is abundant in onion, has high bioavailability. Scientists reported that quercetin may help prevent the oxidation of low-density lipoprotein (LDL) and provide important protection against atherosclerosis.

Stimulates appetite and AIDS digestion

onion contains alliin, has a strong aroma, processing because of the pungent smell and often make people cry.It is this special smell that can stimulate the secretion of gastric acid and increase appetite.Animal experiments have also proved that onion can improve gastrointestinal tension, promote gastrointestinal peristalsis, thus playing an appetizing role, to atrophic gastritis, stomach power, dyspepsia caused by anorexia has obvious effect.

Sterilization, cold resistance

onion contains plant bactericidal element, such as garlic, has a strong bactericidal ability, can effectively resist influenza virus, prevent cold.This kind of plant bactericidal element is passed when respiratory tract, urinary tract, sweat gland eduction, can stimulate the cellular conduit wall of these position to secrete, have expectorant, diuresis again so, sweat and the action such as bacteriostatic anticorrosion.