Activities for the classroom
“Eat your fruits and vegetables” is familiar nutritional advice and was no doubt originally intended to encourage people to eat foods that would meet all of their nutritional needs. Now, the science of nutrition has unearthed even more reasons why that advice is indeed beneficial: phytochemicals. It is these phytochemicals that give fruits and vegetables their vibrant colour and many healthy properties. For example, quercetin is found in apples, onions, citrus fruits, berries, red grapes, broccoli, cocoa, and tea. Research is showing that quercetin assists to protect us against heart disease and cancer. Isothyocynates are found in cruciferous vegetables such as bok choy, broccoli, brussels sprouts, cabbage, cauliflower, kale, mustard, radish, and watercress. Research indicates that increased intake of these may inhibit cancer cell growth and cause cells to die.