Onion or bulb onion is a widely cultivated vegetable belonging to genus Allium. Since centuries, it is being cultivated in many regions of the world and is available in many varieties like red onion, yellow onion, green onion etc. Being a good source of many nutrients like vitamins, minerals, antioxidants, phytonutrients etc. it provides a number of health benefits, and as well as beauty benefits. However, it should be noted that in addition to the health benefits, there are also some side effects of eating onions in excessive quantity. In this article, we will know about the major side effects of eating too many onions
Side Effects of Eating Too Many Onions
(1) Not Safe For Individuals Who Are Allergic To Onions
Consuming onions on a regular basis is beneficial for us as it provides a number of health benefits and as well as beauty benefits. However, Onion is not a safe product to consume for the individuals who are allergic to onions.
If you are the one of those who is allergic to onion then you should stay clear of it as it could otherwise give rise to allergic symptoms like redness of skin and eyes, itchy skin, difficulty in breathing, oral swelling, and tingling.
It could also lower your blood pressure level to a dangerously low level for which you may need to seek immediate medical attention.
(2) May Cause Intestinal Gas And Abdominal Bloating
Another side effect of eating too many onions is their ability to cause intestinal gas in our body. This side effect of onion is mainly due to the presence of natural sugars like fructose in it.
Our stomach is not much efficient in digesting most sugars and fructose is one of them. As sugar doesn’t get digested properly by our stomach so they enter into the intestines where they get broken down by the bacteria, and during this process, gas gets formed.
In lower quantity, this is not a threat. However, if you are consuming too many onions then the level of intestinal gas could increase and this may give rise to digestive problems like abdominal bloating, discomfort, increased flatulence etc.
The symptoms thus experienced could get worse if your digestive system is intolerant to onions. Food Intolerance is not life threating, but sometimes it can lead to nausea, vomiting, and diarrhea.
(3) May Cause Heartburn
Eating onion on a regular and moderate basis is beneficial for our heart and helps in keeping our cardiovascular system healthy. However, too much of everything is bad and same goes with onions.
As per a 1990 study published in the “American Journal of Gastroenterology”, it has been found that people who eat onions in excessive quantity are more likely to experience digestive problems like heartburn, and pregnant women are at a higher risk of heartburn.
Heartburn is a condition in which one feels a burning sensation and extreme pain in his chest. This mainly occurs when the acid present in our stomach get flows in the upward direction into the esophagus.
For this reason, it is advisable to eat onions in moderation and pregnant women should consume onions only after consulting with their doctor.
(4) May Interfere With Certain Medications
Another major side effect of eating too many onions is their ability to interfere with the blood-thinning drugs. Onions especially green onions contain a high level of Vitamin K in them.
Vitamin K present is a naturally occurring vitamin that aids in blood clotting and this is the exact opposite of what blood thinner do.
So, if you are taking blood-thinning medicines like coumadin then you should take a watch on your vitamin K intake, and this is another reason of eating onions in moderation.
Also Read: 17 Amazing Health Benefits Of Onions
(5) Too Much Potassium Is Bad For Our Health
Onions are an excellent source of potassium which is a vasodilator that relaxes our blood vessels and thus improves blood circulation in our body. By doing so, it regulates blood pressure and thus reduces the risk of high blood pressure or hypertension.
Although this is an advantage of onions, it could turn into a disadvantage if you are eating too many onions.
This is because eating too many onions could lower our blood pressure to a dangerously low level and this may give rise to hypotension which is characterized by the symptoms like fatigue, light-headedness, dizziness, nausea, depression, blurry vision etc.
In addition to this, if you are already taking medication for controlling high blood pressure or hypertension then also you should eat onions in moderation as combined effect of both the medicines and the onions can decrease your blood pressure to a dangerously low level.
(6) Can Be Irritative To Skin of Some Individuals
Onion is beneficial not only for our health but also for our skin, and for this reason onion juice is being used for treating skin bruises, wounds, pimples etc. This benefit of onion is mainly due to the anti-septic properties of onions.
However, it should also be noted that not everyone’s skin is comfortable with onions and some are allergic to onions.
These individuals must avoid applying onion or onion juice on their skin as it may otherwise cause the allergic reaction like skin itching, irritation, redness of skin etc.
(7) May Cause Bad Breath And Strong After Smell
Onions contain a good amount of sulfur that provides a number of benefits like cell detoxification, aids insulin production,make arteries and veins flexible. However, it is also linked to causing bad breath and strong after smell. For this reason, it is advisable to eat onions in limited quantity.
(8) May Worsen Cardiovascular Problems
(9) May Lowers Blood Sugar To Dangerously Low Level
Regular and moderate consumption of onions is very beneficial for the individuals suffering from diabetes or who are at a risk of developing diabetes. This benefit of onion is mainly because of the low glycemic index of onion.
It should be noted that glycemic index of onion is only 10 which is considered a low figure and this means that eating onions releases sugar into the bloodstream at a slow rate and thus helps in managing diabetes.
In addition to this, the chromium compound present in onions also plays an important role in diabetes management as it slows down the absorption of sugar into the bloodstream.
However, it should be noted that eating too many onions could lower the blood sugar level to a dangerously low level giving rise to hypoglycemia, characterized by the symptoms like blurry vision, rapid heartbeat, irregular heartbeat, headache, dizziness, trouble thinking etc.
Additionally, if you are already taking medication for regulating your blood sugar level then consuming onions in excessive quantity could worsen the situation and lowers your blood sugar to a dangerously low level.
(10) Too Much Fiber is Bad
Onions are an excellent source of dietary fibers that provides a number of health benefits.
The dietary fibers present in onions plays an important role in keeping our digestive system healthy as it acts as a natural laxative, improves bowel movement and thus provides relief from constipation and other digestive problems like abdominal bloating, indigestion, flatulence etc.
In addition to this, the dietary fibers are also beneficial for keeping our cardiovascular system healthy as it aids in eliminating bad LDL cholesterol from our body, and increases the level of good HDL cholesterol.
It also aids in weight management as it keeps our stomach satisfied for a longer duration, decreases our urge to eat again and again, and thus controls overeating and obesity.
Although dietary fibers present in onions provides a number of benefits, still it is better to eat them in moderation as high level of dietary fibers is bad for our health and give rise to problems like cramping, diarrhea, malabsorption, constipation, intestinal gas, abdominal bloating, intestinal blockage etc.
The information contained in the post is for general purpose only and shouldn’t be considered as a medical advice or as an alternative to medical advice. Although I’ve tried my best to keep the information contained in this post as accurate and updated as possible, I make no guarantee of the accurateness of the same.
P.S- Consider sharing this post, if you find it useful and/or interesting.