Garlic and onions are valeologically good for a valeologically healthy way of living!!!
Onion: Onion (allium sepa) was even worshiped by the Egyptians as far back as 3500 B.C., it symbolised eternity because of its concentric-circle construction.
Onions are rich in powerful sulfur compounds, responsible for their pungent odor -- and for irritating our eyes. Studies also suggest that onions may lower high blood pressure, reduce heart attack risk, and even help protect against cancer (probably thanks to the presence of phytochemicals and the flavonoid quercetin).
One large raw onion has only 63 calories, is made up of more than a cup of water, and provides up to 20% of your RDA of vitamin C.
Garlic: The health benefits of garlic have been touted for centuries, but now researchers may have pinpointed at least one reason why.
A new study shows red blood cells process compounds from digested garlic and turn them into the cell messenger hydrogen sulfide (H2S), which relaxes blood vessels and increases blood flow. Therefore, eating garlic may increase our natural supply of this vital chemical and play a role in reducing the risk of heart disease.
Previous studies on garlic's health effects have produced mixed results. For example, some studies of garlic have found few benefits, but others have been shown to lower the risk of heart disease.
But researchers say if further studies confirm these findings, testing the ability to produce hydrogen sulfide may be used to standardise garlic supplements to produce greater health benefits.