Onion Health Benefits And Side Effects

Many people are not aware that what makes some dishes very tasty is the flavor of onions in the recipe. Further more, food lovers may not know that onions have may health benefits along with some side effects. Onions add a lot of nutritional benefits to the dishes, here are some onion health benefits and side effects.

Benefits of Onions:

Oral health:

Improves oral health people often think that onions cause bad breath.

raw onions fight bacteria that can stimulate tooth decay and improves your teeth.

Colon cancer:

Eating onions prevent colon cancer, as onions contain flavonoids called quercetin which helps immune system to boost and prevents any kind of tumor development.

Fights inflammation:

Onions contain thiosulfinates and sulphides which is greatly helpful to prevent diseases caused by salmonella, bacillus subtilis and E.coli and fights inflammation.

Fights toxic heavy metals:

Onions destroy toxic or harmful materials and normalize the body, they contain vitamin C, Cysteine and methionine. Which help remove toxic heavy metals like cadmium, lead and mercury from the body.

Heart condition:

Onions improve cardiovascular conditions. They promote good blood circulation and lowers high blood pressure that could lead to heart disease and heart attack. Onions also contain sulfur compounds, which are very helpful for red blood cells to function and lower triglyceride and cholesterol levels.

Bone density:

Onions support bone density, research shows that GPCS, a compound in onions, could reduce bone loss in rats, which helps prevent osteoporosis.

Blood sugar:

Lowers blood sugar onions contain allyl propyl disulfide a compound that helps reduce blood sugar levels and regulate serum insulin levels. They also contain high content of chromium, which regulates glucose response level.

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One of the benefit of eating onion is that it smooths sinus, eating onions can help loosen mucous, which clears nasal passages and open clogged nose which makes breathing easier for people.


If someone is suffering from earache, applying onion after half boiling it, in covered cloth greatly helps in relieving earache.

Relieves pain:

If some one got bit by bee, the juice of onions can be applied to the particular area instantly helps relieving pain.

There are plenty of health benefits you can get by eating onions on daily basis, also there are some side effects if eating onions. Onion is’t dangerous when taken in regular amounts commonly present in diet or when applied to the skin. For most of people it is also safe taking it in larger amounts.

Taking up to a maximum of thirty five milligrams of the onion ingredient per day for several months seems to be safe.

Side effects of onion:


Pregnancy and breast-feeding there is not enough reliable information about the safety of taking onion as a medicine if you are pregnant or breast-feeding. It is highly recommended that stay safe and avoid taking onions in large amounts during pregnancy.  

Bleeding disorder:

Onion might slow blood clotting. There is theory that onion might increase the bleeding when taken in excessive amounts.


Onion may lower blood sugar of people suffering from diabetes, such people use onion in medicinal amounts and check their blood sugar carefully.

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For surgery:

Onion may slow blood clotting and decrease  the level of sugar in blood , which may increase bleeding or interfere with blood sugar control during and after surgical procedures stop using onion as a medicine at least two weeks before a scheduled surgery.

These are all onion health benefits and side effects. If you have any question feel free to ask. 

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