Do not store cooked onions in a metal bowl or storage container, as this will cause them to discolour. Freezing chopped onions will cause them to lose much of their flavour. To reduce the production of this compound, chill the onions for 30 minutes or so before cutting to reduce the activity of the enzyme. Onion transforms gravy: Sausages with sticky onion gravy Sausages with quick onion gravy.
Crispy Cajun onion rings. Over the last 15 years she has been a contributing author to a number of nutritional and cookery publications including BBC Good Food.
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Tips to make your kids more assertive. Does putting cabbage relieve swelling and stop breastfeeding? Decoding the big viral hack. A study in the journal Redox Biology found that consuming onions increases oxylipins that help regulate blood fat levels and levels of cholesterol.
The quercetin in onions may also help prevent plaque buildup in the arteries, which reduces the risk of heart attack and stroke, according to the University of Maryland Medical Center. But since most of the studies in this regard have focused on animals, more research is needed to understand the effects in humans.
Quercetin has been found to relax the airway muscles and may provide relief of asthma symptoms , according to a study in the American Journal of Physiology. Eliminating free radicals can help encourage a strong immune system. According to the University of Maryland Medical Center, the quercetin in onions also reduces allergic reactions by stopping your body from producing histamines, which are what make you sneeze, cry and itch if you're having an allergic reaction.
A meta-analysis found that intake of allium vegetables, including onions, were associated with reduced gastric cancer risk. Eating several servings of onions a day may help decrease the risk of oral and esophageal cancer.
Quercetin may be a powerful anti-cancer agent, according to Jarzabkowski. The University of Maryland Medical Center said that quercetin may especially inhibit cancer cells in "breast, colon, prostate, ovarian, endometrial, and lung tumors. The National Onion Association discussed a recent study from the Netherlands that showed that people who ate onions absorbed twice as much quercetin as those who drank tea, and more than three times as much quercetin as those who ate apples, which are other high-quercetin sources.
Red onions are especially high in quercetin, according to the association. Shallots and yellow onions are also good options. White onions contain the least amount of quercetin and other antioxidants. Onions may help with some side effects from cancer treatments, as well. A study published in Integrative Cancer Therapies found that consuming fresh yellow onion helped lessen insulin resistance and hyperglycemia in breast cancer patients undergoing a form of chemotherapy known to cause insulin resistance.
The fiber in onions promotes good digestion and helps keep you regular. Additionally, onions contain a special type of soluble fiber called oligofructose, which promotes good bacteria growth in your intestines. One study in Clinical Gastroenterology and Hepatology found that oligofructose may help prevent and treat types of diarrhea. The phytochemicals in onions that scavenge free radicals may also reduce your risk of developing gastric ulcers , according to the National Onion Association.
The chromium in onions assists in regulating blood sugar. The sulfur in onions helps lower blood sugar by triggering increased insulin production. One study in the journal Environmental Health Insights revealed that this might be especially helpful to people with people with diabetes.
People with Type 1 and Type 2 diabetes who ate red onions showed lower glucose levels for up to four hours. A meta-analysis in the journal Nutrition found that patients with Type 2 diabetes saw more normalized liver enzymes and lower glycemic levels when consuming sliced onions.
A study in the journal Menopause found that daily consumption of onions improves bone density in women who are going through or have finished menopause. Women who ate onions frequently had a 20 percent lower risk of hip fracture than those who never ate onions. While not especially serious, eating onions can cause problems for some people. The carbohydrates in onions may cause gas and bloating , according to National Digestive Diseases Information Clearinghouse.
Onions, especially if consumed raw, can worsen heartburn in people who suffer from chronic heartburn or gastric reflux disease, according to one study in the American Journal of Gastroenterology. Eating a large amount of green onions or rapidly increasing your consumption of green onions may interfere with blood thinning drugs , according to the University of Georgia. Green onions contain a high amount of vitamin K, which can decrease blood thinner functioning.
It is also possible to have a food intolerance or an allergy to onions , but cases are rare, according to an article in the Journal of Allergy and Clinical Immunology. People with onion allergies may experience red, itchy eyes and rashes if an onion comes into contact with the skin.
People with an intolerance to onions may experience nausea, vomiting and other gastric discomfort.
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