A) They shrink hemorrhoids.
B) They're on your tongue.
C) They're near your adenoids.
D) They're in foods that contain antioxidants.
The correct answer is D.
Flavonoids are found in food—in things like teas and dark-colored berries. They're similar to vitamins and are important in maintaining health—studies have suggested an association between diets high in flavonoids and a reduced risk of cancer and heart disease. "They're what gives a lot of foods we have color," Dr. Oz says. "They're particularly effective at helping the body get rid of toxins that affect us."