High blood cholesterol is a condition that causes the levels of certain bad fats, or lipids, to be too high in the blood. This condition is usually caused by lifestyle factors, such as diet, in combination with the genes that you inherit from your parents. Less commonly, it is caused by other medical conditions or some medicines.
Quercetin is highly concentrated in apples, onions (especially red onions), and green tea. It is also in red grapes, citrus fruit, tomato, broccoli, leafy greens, cherries, raspberries, cranberries, and many other fruits and vegetables.One vine ripened apple, for example, contains 50 mg of quercetin.uercetin is highly concentrated in apples, onions (especially red onions), and green tea. It is also in red grapes, citrus fruit, tomato, broccoli, leafy greens, cherries, raspberries, cranberries, and many other fruits and vegetables.
The red wine extract was in the form of a powder and contained several flavonoids, among which quercetin constituted 3.5 mg per gram of powder. Every participant was required to keep a journal of their intake of specific foods, including: fruits, vegetables, chocolates, fruit juices, milk, and alcohol.