Most onion cultivars are about 89% water, 4% sugar, 1% protein, 2% fiber and 0.1% fat. They contain vitamin C, vitamin B6, folic acid and many other nutrients in small amounts. They are low in fats and in sodium, and with an energy value of 40 kcal per 100 g (3.5 oz.) serving, they can give their flavor to savory dishes without raising caloric content appreciably.
Onions contain phytochemical compounds such as phenolic and flavonoids that basic research shows to have potential anti-inflammatory, anti-cholesterol, anticancer and antioxidant properties.
There are considerable differences between onion varieties in polyphenol content, with shallots having the highest level, six times the amount found in Vidalia onions, the variety with the smallest amount. Yellow onions have the highest total flavonoid content, an amount 11 times higher than in white onions. Red onions have considerable content of anthocyanin pigments, with at least 25 different compounds identified representing 10% of total flavonoid content.
Internal Use of Onion
The main recommendation of the onion is to be a vigorous diuretic, diuresis being accompanied by a massive elimination of sodium chloride, thereby is useful in all cases of chlorine retention (edema, ascites, cirrhosis, pleurisy, pericarditis). Occurring also an elimination of urea and uric acid, onion is useful for elimination of uric acid stones and in diathesis as rheumatism, gout, and azotemia. It improves significantly the condition of prostatitis patients, especially in preparation for surgery: prevention, inhibit the development of prostate adenoma. Onions have antiseptic properties, combat pathogenic flora of the intestine in colitis, enteritis. It is also a remedy for diarrhea, but is also a good carminative.
Digestion stimulating properties are known to all.
The antiseptic action combined with its emollient properties makes it useful for hoarseness, rebel cough and bronchial catarrh.
Due hypoglycemic properties, onion is an adjunct in diabetes. Quite recent research has shown that a diet rich in onions, lower the blood glycaemia, reducing the risk of thrombosis and stroke. This explains the anti-atherosclerotic effect of the plant.
External Use of Onion
Through its antiseptic properties, is an active cure for stomatitis, thrush, other oromucosal conditions, furunculosis, with effect especially on Staphylococcus. Usage in furunculosis is explained by its sweeper and emollient (softening tissues) properties. Congestive wounds, ulcers can also benefit from the effects of onion as well as frostbite and ear pain. In folk medicine is used to relieve dental neuralgia.
Uses in Cosmetics
Onion juice is recommended to combat warts and freckles.
Natural Remedies From Onion – Healthy Home Remedies
Healthy tips for your health:
Consume as is, daily minimum 1-2 onions.
Tincture is a natural remedy especially as a diuretic and for prostatitis: A broken onion soaks for 10 days the same amount of alcohol; filter it and take 2 teaspoons a day, before lunch and before bedtime. For the prostatitis, it is recommended a cure for ten days per month for 6 months of the year.
Infusion relieves disorders of respiratory tract (rebel cough): 4-6 onions in 1 liter of water, sweetened with 10 g honey, strain it and drink 1-2 cups a day, one in the morning.
For gallstones: Soak in 4 tablespoons of oil a large chopped onion for 10 days, take 2-3 teaspoons a day.
Decoction is made of 3 large onions 1 liter of water. In rheumatism take one cup in the morning and at bedtime.
Poultices with cooked onion in furunculosis, wounds, frostbite.
Application with onion juice for sores and ulcers.
Applications with a hot bulb in the ear canal can relieve pain.
Do repeated applications with juice 3-4 times a day, for 5-6 days against warts and freckles.
When applied to the scalp it is said to promote growth of hair and on the face to reduce freckling.
The pungent juice of onions has been used as a moth repellent and can be rubbed on the skin to prevent insect bites.
It has been used to polish glass and copper ware and to prevent rust on iron.
If boiling water is poured onto chopped onions and left to cool, the resulting liquor can be sprayed onto plants to increase their resistance to pests, and the onion plants when growing are reputed to keep away moles and insects.
Onion skins have been used to produce a yellow-brown dye.I use to dye Easter eggs with onion.
Contraindications have not been identified.