10 Amazing Health Benefits of Onions

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Hey, Welcome to our blog! Today I will be sharing with you 10 amazing health benefits of Onions, which you may not even have known.

Many people used onion today in their daily meal preparation but do not know the benefit of onions to their health. And some people do not even eat it at all, I was mad at one my friends the I got to know that she does not cooked with onions.

By the time you finish reading this article, you will understand the 10 amazing benefits of onions and the reason why you should add onions to daily diet whether raw or cooked. But ‘sulfur’ which is one the active compound in onions is more active when eaten raw than cooked.

The only way you can cook it and still have the nutrients intact is by baking with it together with the skin. In this manner, the nutrients are preserved.

Onion is a vegetable that is packed with many health benefits to help improve our overall wellbeing. Onion is a member of Allum family, which is cultivated widely around the world nowadays. Its close family is garlic, shallot, leek, chive and Chinese onions.

Onion contains active compounds, minerals and vitamins that could support our immune and healthy system, to keep us alive without being sick. These are the things we will discuss in this article.

Keep reading to find out the 10 amazing health benefits of Onion, number eight and nine benefits will surprise you.

Amazing Health Benefits of Onions

There are many benefits of to health, hair and skin. But for the purpose of this article we will be looking at some the health benefits.

Immune System:

Onions is a vegetable that is packed with many nutrients to improve our health function. One medium onion contains low calories (45), low sodium but high vitamins (such as vitamin C, Vitamin B9 and B6), minerals, potassium, chromium and fiber.

Vitamin C is a powerful antioxidant that is in charge of protecting your body cells from damaging by free radicals, regulating your immune system, production of collagen, repairing of tissues and iron absorption.

B-vitamins are in charge of metabolism, production of red blood cells and nerve functions.

Finally, Potassium works for cellular functions, fluid balancing, nerve transmission, kidney functions and muscle contraction in your body.


Onion has high content of fiber and probiotics, which are very important for your optimal digestive health and gut health. Onions contain special type of soluble fiber called ‘Olifructose’, which promotes good bacteria growth in your intestines. It may also help prevent and treat types of diarrhea.

Anti Cancer:

Onion contain some cancer fighting properties in the form of sulfur compounds and flavonoid antioxidants such as Onionin A, a sulfur containing compound and Fisetin and Quercetin, a flavonoid antioxidants that may inhibit tumor growth, and inhibits cancer cells growth in breast, colon, prostate, ovarian, endometrial and lung tumors.

 Heart Health:

Quercetin is a flavonoid antioxidant found in onion, which has anti-inflammatory properties that may help fight inflammation, lower triglyceride and bad low density lipoprotein (LDL) cholesterol. Thereby reducing high level of heart attack and high blood pressure in human caused by blood clots and plaques in the arteries and veins.

According to healthline, A study in 70 overweight people with high blood pressure found that a dose of 162mg per day of Quercetin – rich onion extract significantly reduced systolic blood pressure by 3 – 6mmHg compared to placebo.

Another study in 54 women with polycystic ovarian syndrome (PCOS) found that consuming large amounts of raw red onions (40 – 50gram/day if overweight and 50 -60gram/day if obese) for eight weeks reduced total and ‘bad’ LDL cholesterol compared to control group.

Read related: how to prevent and reduce heart diseases.

Anti Inflammations:

Sulfur and Quercetin flavonoid antioxidant in onion are effective anti-inflammatory agents. So they fight inflammation in your body.

Quercetin has been found to relax the airways muscles and may provide relief of asthma symptoms.

Blood Sugar Regulator:

Onions contain Chromium, which may assist in regulating blood sugar by triggering increased insulin production. A 2010 study by journal environmental Health Insight revealed that this might be helpful to people with type 1 and 2 diabetes who ate red onions showed decrease glucose levels for up to 4 hours. Eating sliced onions daily may also help normalize liver enzymes and lower glycemic levels.

Bone Density:

Consuming onions daily may improve bone density in menopausal women. Women who also eat onions frequently had 20 percent lower risk of hip fracture than those who never ate onions.

Relieve Bloating:

High content of fiber and probiotics in Onions may help fight bloating and excess gas in your stomach. Since the age of 20 years till now I don’t know what is called Antacid in pharmacy. When I have bloating or feel excess gas, I will eat one medium and I’m fine.

Treatment of Scorpion Venom Sting:

Scorpions sting is very dangerous to human, may even lead to death if you’re in a rural where there is no good hospital. Are scorpions sting plenty in your area? Don’t worry, just deep your hand in that basket of onions in your kitchen, chew one medium bulb of onions and you’re okay.

When I was serving as a Corp member in my country and one day I was stung by scorpion. Before you know what is going on I don’t know myself again, the only thing I shouting to my fellow Corp members was get me onions! Get onions!! Get me onions!!! And one of them ran and got the onions for me, which I ate immediately and slept off. By the time I woke up from my sleep, I was fine. Till today I am fine without visiting any physician. God bless my grandmother who told us the story of how they cured scorpion venom stung with onions in those old days of theirs.


Onion can be used in different ways to cook different types of meal such as:

  • Guacamole recipes
  • Savory baked goods
  • Salads
  • Egg dishes
  • Meats, Soups, Stocks, chilli recipes and Stews etc.

Onions can also be eating in raw state (fresh) because the content in it is more active and powerful in raw state than cooked.

Onions Nutrition Facts By FDA

Serving size: 1 medium onion (5.3oz/148g)

Calories: 45 (Calories from fat: 0)

Amount per serving (%DV*)

*percentage Daily Value (%DV) are based on a 2,000 – calories diet

Total fat: 0g (0%)

Total carbohydrate: 11g (4%)

Dietary fiber: 3g (12%)

Sugar: 9g

Cholesterol: 0mg (0%)

Sodium: 5mg (0%)

Potassium: 190mg (5%)

Protein: 1g

Vitamin A: (0%), Vitamin C: (20%), Calcium: (4%), Iron: (4%).

Onion Side Effects

Onion does not have any side effect if eating but may increase heartburn to some people when eaten raw.

Your partner may also find irritating or offensive to kiss you because of the strong odor of onions. Simply chew an apple to get rid of the odor from your mouth.


Above are 10 amazing health benefits of Onions. Now that you’ve known that power of Onions to your health, do not pass a day without adding onions to your diet. It is one of the vital vegetables that you need daily for optimal health. Eat it in the morning, in the afternoon, in the evening and in the night. It does not overdose.

Red and Yellow onions contain higher amount of Quercetin, which is responsible for fighting inflammation, cancerous cells, reducing cholesterol and blood sugar than white Onions.

Green Onions are young red, yellow or white Onions harvested when matured yet.

Thank you for stopping by. Let me hear what you have to say at the comment section.

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