41.   Just head into the produce section, pick up a selection of colorful citrus fruits, purple potatoes, tiny pumpkins and small heads of red cabbage or radicchio.

42.   Lettuce and melons, citrus fruits and dates are produced in quantity, too.

43.   Most of that is used for growing table grapes, but the company also grows citrus fruit and crops like honeydew melons and radicchio.

44.   Most protective were green leafy and cabbage-family vegetables and citrus fruits and juices.

45.   Michelle Sivertson favors a mixture of water, white wine and cut-up citrus fruits.

46.   Most are made with oranges, but other citrus fruits, including grapefruit, tangerines, lemons and limes, are also used, either alone or together.

47.   Natural sources include green leafy vegetables, beans, asparagus and citrus fruits.

48.   Other foods currently under research include other cruciferous vegetables, carrots, citrus fruits, cranberries, dairy, fish, flaxseed, garlic, meats and oats.

49.   Other phytochemically-rich foods include horseradish, gingerroot, curry, citrus fruits, coffee and teas.

50.   Pair fresh red onions in a salad with citrus fruits such as oranges and grapefruit for an added dose of vitamin C.