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Intake of
Vitamins A, C, and E and Risk of Melanoma
"Within the two Nurses' Health Study...of US women, we examined whether
higher intakes of vitamin C, vitamin E, 'vitamin A,] or individual
tocopherols 'vitamin E types] or carotenoids 'coloring in fruits and
vegs., as red in tomatoes, yelllow in cantaloupe and carrots, etc.] are
associated with lower risks of melanoma...
"Contrary to expectation, we observed higher risks of melanoma with greater
intakes from food of vitamin C 'including orange juice.]
They did find that
food-based vitamin A was helpful
although the other nutrients were neutral.
SEE
DETAILS (BELOW) FOR A POSSIBLE EXPLANATION OF THESE CONTRARY RESULTS.
By
Feskanich, Willett, Hunter & Colditz, Dept. of Med., Brigham & Women's
Hosp., Harvard Med. School, Boston, MA 02115, Dept. of Nutrition, Harvard
School of Public Health & Harvard Ctr. for Cancer Prevention.
In
British Journal of Cancer, vol. 88, 2003.
DETAILS: At first the two studies do seem contradictory. However, other
reports have shown that
vitamin C can be overdosed,
and frequently is. One glass of orange juice may be fine, but more may be
deleterious. Further, vitamin C pills, sold in massive doses as much as 1000
milligrams, are produced for the benefit of the companies, not the
consumers. Dr. Linda Chen, Head of Ph.D. programs in Nutrition at the U. of
Kentucky, a recognized authority, told us that 1000 mgs. TOTAL INTAKE in a
day is about the safe limit. You
can buy 250 mg. tablets, break them in half and have the halves several
times a day. She
agreed with that approach. Or, have that single glass of juice.
back
to Vitamins index

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