ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Why Onions Are Good For You

Updated on September 4, 2017


There are many varieties of onions.  All are good for you.
There are many varieties of onions. All are good for you. | Source

Onions Have Many Benefits

Onions have been grown for thousands of years. They originated from Asia. They were originally grown for its antiseptic qualities, and later became popular for its varied use in cooking. In Ancient Egypt, onions were used for the purpose of mummification.

Onions are part of the alluim family, just like garlic, scallions, leeks, and chives. The most familiar allium is the bulb onion, which comes in yellow, white, purple and red skins.

These foods are high in sulfur containing compounds, which give them their pungent odor and also provide many health promoting benefits.

Facts About Onions

Onion facts:

  • high in vitamin c

  • good source of fiber

  • good source of folic acid

  • 45 calories per serving

  • sodium, cholesterol, fat free

  • onions low in calories

  • trace amounts of calcium and iron

  • high in potassium 1/2 cup of chopped onion yields about 240 mg of potassium

Researchers in Spain recently did a study that looked at the antioxidant and antibacterial properties of several types of onions.

Eat Onions for Flavor and Nutritional Benefits

Onions have many benefits
Onions have many benefits | Source

Onions and Antioxidants

Since ancient times, onions have been used in herbal medicine. Recent studies have shown that onion consumption reduces the risk of cardiovascular issues, cancer and reduction of inflammation. In studying the amount of flavonoids and phenols in many varieties of onions, it appears that onions are also high in antioxidants. Quercetin and kaempferol have antibacterial properties, and may even help as a natural food preservative.

Extracts from onions may inhibit the growth of bacteria that is commonly associated with food deterioration.

Flavonoids can reduce the risk of coronary heart disease. Flavonoids are concentrated in the outer most layers of the fleshy part of the onion. Onions also contain queretin, a type of antioxidant that slows the damage oxidation causes to our tissues and our cells. In studies, quercetin has proven to be able to get rid of free radicals in the body. We absorb quercetin twice as much from tea, and three times as much from apples. Onions may be able to prevent gastric ulcers by going after free radicals, by preventing the microorganisms that encourage ulcers to form.

Onion Recipe

Onions Can Help Fight Disease

Pungent onions have a powerful ability to stop platelet accumulation which is linked to cardiovascular disease and related health problems. At the University of Wisconsin, ongoing studies are being conducted to understand more about the powerful properties of onions. The researchers are looking into the possibility that onions can be used as a blood thinner and platelet inhibitor. Onions may also be able decrease osteoporosis.

Onions add wonderful flavor to food and has many value added health characteristics.

Several studies have shown quercetin to have beneficial effects against many diseases and disorders including cataracts, cardiovascular disease as well as cancer of the breast, colon, ovarian, gastric, lung, and bladder.

In addition to quercetin, onions contain the phytochemicals known as disulfides, trisulfides, cepaene, and vinyl dithiins. These compounds have a variety of health-functional properties, including anticancer and antimicrobial activities.

Quercetin doesn’t degrade, even when onions are simmered in hot water to make soup. The quercetin gets into the water of the soup. Heating onions on a low heat does not take away any of the good health effects of the onion.

The quercitin we get from onions is better than the quercitin we can get from supplements. Studies have shown we get better protection from oxidative stress when we eat an onion, cooked or raw.

Onions, whether boiled, fried, microwaved, baked, or sauteed, retain their levels of quercitin.

Scallions and Other Types of Onions are Good for You

There are many types of onions.
There are many types of onions. | Source

Onions Have Many Benefits

It seems that eating about one to seven servings of onions on a weekly basis can effectively lower the risk of some types of cancer, including colorectal, laryngeal, and ovarian. To reduce the risk of esophageal cancer, you would need to eat a serving of onions each day. A serving of an onion is equivalent to about 1/2 cup.

Onions can have a sweet flavor. If you saute onions for 7 minutes, you can savor that sweet flavor.

When you saute onions, it is a great way to bring out the sweet flavor of them. It only takes about 7 minutes. Cut the onions into equal slices about 1/4 inch

so they cook evenly. The thinner the onions are sliced, the faster they cook. After they have cooked, turn the heat off of the stove and let them sit for about five minutes. This helps enhance the healthier qualities of the onions.

Most research on the cardiovascular benefits of onions has been done on animals. Evidence is showing that the sulfur compounds in onions may have anti clotting abilities. This science believes may help prevent the blood platelet cells from clumping together. Sulfur compounds may also lower blood levels of cholesterol and triglycerides and improve cell membrane function in red blood cells.

People who eat onions and other fruits and vegetables that are high in flavonoids may help prevent heart attacks.

Onions Are Good for Our Bones

Onions help reduce the loss of bone density.
Onions help reduce the loss of bone density. | Source

Anti Inflammatory Benefits of Onions

Onions have also proven to increase our bone density and may be beneficial to women who are of menopausal age when they may be experiencing bone loss. Women who are past the age of menopause may also be able to reduce the risk of hip fracture, if they eat onions on a daily basis. One study showed that sporadic onion consumption, in women who ate onions only once a month, did not benefit with increased bone density, but women who ate them on a daily basis showed great benefits to increased bone density.

Over and over again studies are showing that onions added to meals have many benefits to our overall health in many ways.

The sulfur content of onions also have show to have many benefits to our connective tissue. Connective tissue requires sulfur for its formation.

Onions may also help with rheumatoid arthritis and other inflammatory problems. The anti inflammatory benefits of onions are still be studied.

The bulb portion of the onion contains a unique sulfur molecule that has shown it can help control certain specialized white blood cells that affect our body’s immune defense system and is involved in triggering a large scale inflammatory response that can cause unwanted inflammation.

The antioxidant benefits of onions also provide anti inflammatory benefits by preventing the oxidation of fatty acids in our body. Lower levels of oxidized fatty acids produce less inflammatory signals and help keep things more in balance in our bodies.

You and Onions

How Often Do You Eat Onions

See results

More Food Info from ToKnowInfo

click on any of the information below to read about other healthy foods from toknowinfo:

broccoli benefits

tomato recipes

tomato - vegetable or fruit


food presentation


more raspberries




ice cream


    0 of 8192 characters used
    Post Comment

    • profile image

      Vev of Jolo 

      4 years ago

      Wooow.. amazing to know that onions has its health benefits.. thanks for sharing information.

    • d.william profile image


      5 years ago from Somewhere in the south

      Great hub. I love onions and put them in just about everything i cook (except desserts- L.O.L.).

      I suppose they will be the next to be destroyed by GMO people who care more about $$ than health benefits. I have lost the tomato, brocolli, cauliflower, corn,and other favorite foods to the GMO craze in this country (U.S.)

      I can only pray that the side effects of eating GMO foods are minimal, but with the recent studies in France showing them to cause wide spread tumors in lab animals, i am afraid my hopes are for naught.

      We used to eat raw onions like apples when we were kids. I can't imagine any kids doing that today.

    • peachpurple profile image


      5 years ago from Home Sweet Home

      pack with information I should say for this hub of yours. Useful and informative. I love using onions in my recipes. Actually i mix onions in meat and vegetable recipes everyday. I like fresh raw onions mix with satay and salads. Delicious even though brings oral odor and farting too. Voted useful

    • BlissfulWriter profile image


      5 years ago

      Good info. More people need to know the benefits of sulfur containing foods. The body needs sulfur to make glutathione, which is the body's master antioxidant and detoxifier. Besides onions and garlic, I like to get my sulfur from broccoli, kale, cabbage, aspragus, and brussel sprouts.

    • Neil Sperling profile image

      Neil Sperling 

      5 years ago from Port Dover Ontario Canada

      Great article - I was afraid it might make me cry... but all is good.

      I love onions - use in soups as well as many other dishes. Thanks

    • Suzie HQ profile image

      Suzanne Ridgeway 

      5 years ago from Dublin, Ireland

      Great information and learnt so much on onions which I did not realise! So high in antioxidants and Vit C, good to know as we eat onions weekly, normally 2-3 times. Thanks for a useful and informative article, votes ++++ shared!

    • livingsta profile image


      5 years ago from United Kingdom

      Wow, so much benefits in onion? I did not know that onions were rich in Vitamin C and fiber content. Thank you for sharing this useful information with us. Voted up and sharing!

    • billybuc profile image

      Bill Holland 

      5 years ago from Olympia, WA

      Good information my friend. I just don't like them that much. Bev, on the other hand, loves them, which makes for some interesting kissing. :)

      I'll pass this on to her and you have our thanks.



    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)