Why citrus fruits (oranges, lemons, limes, tangerines, grapefruit)? –
As mentioned in Anti-Cancer (page 127) citrus fruits (oranges, lemons, tangerines and grapefruit) “contain antiinflammatory flavonoids. They also stimulate the detoxification of carcinogenics by the liver.”
“It has even been shown that flavonoids in the skin of tangerines – tangeritin and nobiletin—penetrate brain cancer cells, facilitate their death by apoptosis, and lower their potential for invading neighboring tissues.”
In addition as reported by the Sunkist Nutrition Bureau:
“Lemon, orange and grapefruit peel are loaded with d-limonene, which studies show has cancer-protecting activity against a variety of cancers. A recent study from University of Arizona concluded that consuming citrus peel can reduce the risk of skin cancer by 30%. ‘As little as one tablespoon of citrus zest per week is enough to make a significant difference in preventing skin cancer,’ said Iman A. Hakim, M.D., Ph.D., University of Arizona College of Public Health and Arizona Cancer Center. (One tablespoon of zest is equivalent to the peel of approximately one orange or lemon, depending on the size of the fruit and how finely or coarsely the zest is grated.)”
IMPORTANT note of caution re grapefruit and grapefruit juice:
Before you consume grapefruit or grapefruit juice (or possibly even grapefruit peel), check with your doctor and/or pharmacist regarding possible adverse (and very serious) drug-food interactions. Read more about this at Science Daily.