Red Onion - Benefits and Healthy Facts About Red Onions
Red onion also called Spanish onion or purple onion, is a vegetable, one sort of the onion. It
has red, almost purple skin and white meat with red strings. It is
considered that it is the most widely cultivated species of the genus
Allium. Red onion is very mild and has a sweet taste.
There are famous varieties: red onion of Turda and red onion of Tropea. Red
onion of Turda is a particular variety from Turda, Central Romania, and has
a particular aroma. Red onion of Tropea is from Italy and has a strong and
sweet taste. It is juicier than others red onions, actually, so much juicer
that jam can be made with it. In the United States, the most popular
variety is Wethersfield red onion, red onion from Connecticut.
Red onions are most popular type of onions in India, the Mediterranean, and
the Middle East, but in Britain white onion is the most common type.
Although both onions, red and white, are so-called "superfood" due to
beneficial nutrients, red has more health benefits. Both onions provide
about 10% of the daily value for vitamin C, but red contains a higher
amount of antioxidant compounds. White onion has 0.5 g more of fiber and a
higher amount of sulfur, but red has a higher amount of flavonols and
anthocyanins. Red onion contains at least 25 different anthocyanins. Red
onions are also more effective natural blood thinner than white onions
because they are richer in flavonoids, which help thin the blood. Both
onions meet 2% of daily value for calcium, but the red onion meets 2% of
the daily value for iron.
Red onion is mostly popular because of phytochemicals, which are important
because they boost our immune system. Red onion is also a rich source of
vitamin K, B6, and C, but at the same time, the phytochemicals act as a
stimulant to vitamin C within the body. Fiber from red onion helps in
functioning of the digestive tract, and it helps prevent constipation. Red
onion is rich in minerals, too: it has folate, thiamine, calcium,
magnesium, potassium, and manganese.
Among others health benefits, red onions contain antioxidants, flavonoids.
Antioxidants are important because they are fighting the free radicals.
Free radicals (toxic organic waste) are considered dangerous because they
can cause cancer by mutating the DNA. Because of that, quercetin,
antioxidant from red onion, is most valued - some studies showed that it
can even reduce spreading of cancer through the body. Studies showed that
one-half of onion on a daily basis could reduce the risk of stomach cancer
by 50%. For example, in the USA, in Georgia where red onion is grown, the
number of stomach cancer is a half the average for the rest of cancer and
in China, where is red onion mostly used, the risk of stomach cancer is 40%
lower than average.
Quercetin is also significant for those with high blood pressure. According
to a study by the University of Utah, this antioxidant can reduce the risk
of coronary heart disease and stroke. Although the study didn't show
results on people who don't have high blood pressure, the ones who have
hypertension did have benefits. Allicin, also compound, helps in reducing
high blood pressure. Quercetin is also good due to anti-inflammatory
effect, so it's beneficial for people with allergies, asthma, and
arthritis. Short-term inflammation in the human body should raise the
natural defense of the body, so it's not dangerous, but on the other hand,
long-term inflammation can cause serious problems like heart disease,
cancer or Alzheimer’s disease. Quercetin can help with that. Beside of
anti-bacterial effect, it has anti-fungal properties, too. It can help with
psoriasis and can inhibit many viruses, such as herpes simplex.
Anti-inflammatory effects of red onion are best shown in people with acne.
When you apply red onion on face together with honey or olive oil, it
reduces redness and swelling. Also, when you put red onion on area injured
by a bee, you will feel immediate pain relief - burning sensation will
Because of mineral chromium, red onion is especially good for people with
diabetes - chromium has an impact on sugar level in the body and helps in
slowing and controlling the release of sugar into the body. As an essential
for insulin activities, lack of chromium can cause a gain of weight, so if
you want weight loss, make sure to eat red onion. Also, red onion is low
glycemic food (glycemic index GI is 10) which means that it's ideal for
diet. One ounce of onions contains only 11 calories and has zero fat. Raw
red onion is ideal for overweight women, in particular for ones with PCOS,
because it significantly lowers level of cholesterol (high cholesterol is
an indication of PCOS).
If you have the ringing sound in the ear or earaches, just put few drops in
the ear. Tinnitus can also be cured this way.
It is important to know that many people have an onion allergy. That
includes itchy eyes, redness, and rashes if an onion only comes into
contact with skin, but also vomiting and gastric problems.