Onions and heart
1. To help keep our blood free of clots, and make the most of the health
benefits of onions, eat them both raw and cooked.
2. Prescribing onions to heart patients is a routine thing amongst
cardiologists.
3. Here are some of the things that onions can do for our heart:
(i) Boost beneficial HDL cholesterol
(ii) Thin the blood
(iii) Retard blood clotting
(iv) Lower total blood cholesterol
(v) Lower triglycerides
(vi) Lower blood pressure.
Onions are a rich source of quercitin
1. It is the richest dietary source of quercitin, a potent antioxidant
flavonoid (also found in shallots, yellow and red onions), which is found
on and near the skin and is particularly linked to the health benefits of
onions.
2. Quercitin thins the blood, lowers cholesterol, raises good-type HDL
cholesterol, prevents blood
clots, fights asthma, chronic bronchitis, hay fever, diabetes,
atherosclerosis and infections and is specifically linked to inhibiting human
stomach cancer.
3. It is also an anti-inflammatory, antibiotic and antiviral. It
is also a sedative. So far, there is no better food source of quercitin than
onion skins.
Detoxify your body with onions
1. Onions contain a variety of organic sulphur compounds that provide
health benefits.
2. Sulphur-containing amino acids are found in onions as well as garlic
and eggs.
3. These specific amino acids are called methionine and cystine. Amongst
other things, they are very good at detoxifying our body from heavy
metals.
4. In fact, they are able to latch on to mercury, cadmium and lead and
escort them out of the body.
5. Onions also contain vitamin C, which is excellent at detoxifying the
body and is effective in removing lead, arsenic and cadmium. So increasing
consumption of onions can help our body to get rid of these harmful metals.
Cancer prevention
1. Studies have revealed that the antioxidants present in onions can
protect us against cancer by reducing the DNA damage in cells caused by
free radicals.
2. All onions and onion relatives (garlic, leeks, chives and scallions
or spring onions) are rich in organosulfur compounds, which have been
shown to help prevent cancer in lab animals.
3. In fact, an onion extract was found to destroy tumour cells in test
tubes and arrest tumour growth when the cells were implanted in rats.
4. The onion extract was shown to be unusually nontoxic, since a dose as
high as forty times that of the dose required to kill the tumour cells had
no adverse effect on the host.
5. In addition, shallots have been shown to exhibit significant
activityagainst leukaemia in mice.
Other health benefits of onions
1. Onions have also been shown to have a significant blood sugar lowering action, even
comparable to some prescription drugs.
2. The active compound that seems to be responsible for lowering glucose works by competing
with insulin for breakdown sites in the liver, thereby increasing the lifespan
of insulin.
3. Onions have historically been used to treat asthma, too. Their action on asthma is due to their ability
to inhibit the production of compounds that cause the bronchial muscle to spasm
and relax.
4. Onions have potent antibacterial
activity, destroying many disease- causing pathogens, including E.coli and
salmonella.
5. The flavonoids in onion tend to be more concentrated in the outer
layers of the flesh. To maximise health benefits, peel off as little of the
fleshy, edible portion as possible when removing the onion’s outermost paper
layer. Even a small amount of overpeeling can result in unwanted loss of
flavonoids. For example, a red onion can lose about 20 per cent of its
quercetin and almost 75 per cent of its anthocyanins if it is overpeeled.
6. The total polyphenol content of onions is much higher than many people
expect. (Polyphenols are one of the largest categories of phytonutrients
in food. This category includes all flavonoids as well as tannins.) The
total polyphenol content of onions is not only higher than its fellow allium
vegetables, garlic and leeks, but also higher than tomatoes, carrots and
red bell pepper. In the French diet, only six vegetables (artichoke heart,
parsley, brussels sprouts, shallot, broccoli and celery) have a higher
polyphenol content than onion. Since the French diet has been of special
interest to researchers in terms of disease prevention, onion’s
strong polyphenol contribution will very likely lead to follow-up studies that
pay closer attention to this unique allium vegetable
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