Onion is one of the oldest vegetables known to humanity. There are several types of this vegetable: yellow, red and white. It is used as an additive or spice in all of the world’s kitchens. You can find onion fresh, frozen, canned, in dehydrated condition and as powder. This vegetable can be used in almost any kind of food. It can be eaten fried or fresh in salads or as a spice. Depending on the kind, onion can be sharp or mild taste.
Onion is very healthy vegetable. Onions contain valuable medicinal substances and can be used as a natural remedy for many diseases.
The nutrients that onions contain are many. It contains carbohydrates in small amounts vegetable protein and fat. But the real value of onions in the diet comes from the content of vitamins and minerals. It is a real treasure of vitamins, minerals, oligoelements… It contains potassium, sulfur, vitamins B1, B2, C, K, Q, beta carotene etc. Onion act like an insulin to our body.
It is believed that onions help with a wide range of diseases, from the common cold, to heart diseases, diabetes, osteoporosis, rheumatism and other diseases. It contains chemical compounds that are believed to have anti-inflammatory, anticancer and antioxidant properties. One of these chemical compounds is quercetin. Quercetin has many useful properties.
This chemical compound has anticancer effects. It belongs to a group of plant pigments called flavonoids, which dissolve in water. It acts as an antihistamine and has anti-inflammatory characteristics. Among the many observable effects, quercetin has powerful antioxidant properties as well. It also reduces oxidation of LDL (bad cholesterol) and protects the heart.
Large number of studies suggests that quercetin may have anticancer properties. Quercetin is becoming increasingly popular as a dietary supplement.
It is believed that some phytoestrogens have antiestrogen effect, which can lead to reduced risk of some types of cancer (breast cancer, prostate cancer). The laboratory tests demonstrated that quercetin has activity as antiestrogen.
The people who are fed with food that contain quercetin and other flavonoids have reduced risk for getting lung cancer, gastric, and pancreatic cancer.
In addition, onion purifies the blood, purifies the blood vessels and prevents atherosclerosis.
Shortly -- onion is healthy food and natural medicine.