Some scientific studies have found that the polyphenol compound quercetin of onion has anti-cancer properties and it reduce the chances of the growth of prostate cancer and lunge cancer. Quercetin is also a very powerful anti-oxidant which helps to reduce the inflammation in the body and helps promote towards good general heath.
Raw onion is a good source of Quercetin. Quercetin is a bioflavoniod and antioxidant compound. It has anti-inflammatory actions. The compound Quercetin is also helps to reduce the allergies. Quercetin is found naturally in the onion especially in the red outer layers of onion. Quercetin is a compound which counter the allergic chemical histamine. Quercetin has anti-inflammation properties therefore, it helps to reduce the severity of asthma.
Some studies now indicate that apples can reduce the cholesterol and help the heart and arteries in several ways. Not only apples are the source of fiber but it has one particular type of fiber named pectin. Pectin is soluble fiber which helps to reduce the cholesterol. The apples are the source of flavonids and Quercetin, the antioxidant compounds that protect heart, kidneys and the body from the damage of free radicals and and other side effects.