Health Benefits of Onions

Onions belong to the lily family, which also includes garlic, leeks, chives, scallions, and shallots. Early American settlers used wild onions to treat colds, cough, asthma, and to repel insects. Onions are effective against many bacteria, including Bacillus subtilis, Salmonella, and E. coli. There are many different types of onions, including red, yellow, white, and green. Each different type of onion has its own unique flavor, from very strong to mildly sweet. The high level of sulfur-containing compounds gives onions their unique odor. The strongest smelling onions provide the most health benefits. The best choice is yellow onions, followed by red onions, and then white onions. They are a significant source of vitamins B6 and C, dietary fiber, chromium, folate, manganese, potassium, copper, and phosphorus.


There are many good health benefits involved with onions. A regular diet including onions can lower cholesterol levels and high blood pressure. This can help to prevent atherosclerosis and diabetic heart disease. It can also reduce the risk of heart attack and stroke. Onions are able to increase good-type HDL cholesterol and reduce total cholesterol levels to make a person healthier. Onions are good for diabetics because they contain allyl propyl disulfide, which lowers blood sugar levels by increasing the amount of free insulin available. They also contain thiosulfinates that reduce the symptoms of diabetes. Colorful onions, such as red or yellow, contain the most thiosulfinates. It is best to eat onions raw or lightly cooked because heat diminishes thiosulfinates. Onions contain sulfides which might lower blood lipids and blood pressure.


Onions contain flavonoids, such as quercetin, that can reduce the risk of developing colon cancer by stopping the growth of tumors and protecting colon cells from the damaging effects of certain cancer-causing substances. The flavonoids improve the integrity of blood vessels and decreases inflammation. They also provide protection against cardiovascular disease. Quercetin protects the body against stomach ulcers and colon, esophageal, and breast cancers. Quercetin extract enhances physical performance and endurance.

Other interesting facts about onions are that onion extracts are good at relieving coughs and colds, asthma, and bronchitis. They decrease bronchial spasms and allergy-induced bronchial constriction in asthma patients. They are very rich in chromium, which is a mineral that helps cells respond to insulin. They are effective against osteoporosis. In osteoporosis, they destroy osteoclasts so that they don't break down bone.

Onions are safe to eat for most people but eating too much of this food may cause stomach distress and gastrointestinal irritation that might cause nausea or diarrhea. Cutting onions under cold running water is good at reducing watery eyes and eye irritation. Cut onions should either be stored in a sealed container or wrapped tightly in plastic wrap and immediately refrigerated. Uncut onions should be stored in a cool, dark, and dry place.

Canker Sores

Canker sores are small shallow ulcers in the mouth that can be caused due to issues, such as stress, tissue injury, a virus, irritation to spicy foods, or biting the inside of the mouth. There are foods, such as citrus and acidic fruits and vegetables, that can cause canker sores. To prevent canker sores it is recommended to brush your teeth regularly to keep the mouth free from irritants, avoid foods that cause irritation in the mouth, especially acidic and spicy foods, and avoid irritation from chewing gum. Hard and crunchy food can also cause canker sores.

The sores usually go away without any treatment but there are over the counter products that can provide temporary relief and healing. If the sores are unusually large, are spreading, last longer than three weeks, won't go away, cause high fevers, or the pain doesn't allow you to drink enough fluids, then it is recommended to visit a doctor as soon as possible. A doctor will be able to prescribe a medication that can help.

Fight Cancer with Berries

Berries, such as strawberries, raspberries, blueberries, blackberries, and cranberries, contain ellagic acid and polypenols, such as anthocyanidins and proantocyanidins, that promote the death of cancer cells. Berries are also high in antioxidants, which attract and neutralize free radicals that could damage body cells in ways that could cause cancer, heart disease, and age-related eye damage. They are also good source of vitamin C and could help to prevent or reverse the disease processes of diabetes, heart disease, and stomach ulcers. They can also help to lower cholesterol levels. It is best to eat them raw in their whole fruit form instead of eating processed berries or fruit drinks that are made from berries.