1, cancer prevention
The cancer prevention effect of onion comes from its rich selenium and quercetin. Selenium is an antioxidant that can stimulate the body's immune response, thereby inhibiting the division and growth of cancer cells, while also reducing the toxicity of carcinogens. Quercetin, on the other hand, inhibits carcinogenic cell activity and prevents cancer cell growth.
2, the maintenance of cardiovascular health
Onion is known as the only vegetable containing prostaglandin A. Prostaglandin A can dilate blood vessels. Prostaglandin A can dilate blood vessels, reduce blood viscosity, which will produce lower blood pressure, increase coronary blood flow, prevent thrombosis.
3, stimulate appetite, help digestion
Onion contains onion garlic chorine, has a strong aroma, processed due to the pungent odor and often make people cry. It is this special flavor can stimulate gastric acid secretion, enhance appetite. Animal experiments have also proved that onions can improve gastrointestinal tract tension, promote gastrointestinal peristalsis, thus playing the role of appetizing, atrophic gastritis, gastric dynamics, indigestion and other causes of loss of appetite has a significant effect.
4, bactericidal, anti-cold
Onion contains phytobactericides through the respiratory tract, urinary tract, sweat glands, can stimulate the secretion of the cell walls of the pipeline in these locations, so there is expectorant, diuretic, sweating and antibacterial antiseptic effect.
5, onions on the "rich disease" has a very good prevention
Onions contain yellow urea butyric acid, can make the cells better use of sugar, thereby reducing blood sugar. Onions also contain prostaglandins, can expand blood vessels, reduce peripheral vascular resistance, promote the excretion of sodium, so that increased blood pressure down.