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High dietary phosphate intake may increase skin cancer risk | A new study by researchers at Emory University
School of Medicine has shown that a high intake of phosphates can contribute to tumor growth in skin cancer. In the study, the researchers applied dimethylbenzanthracene,
a carcinogen found in cigarette smoke, to the skins of mice, followed by another
chemical that stimulates cell growth. Feeding these mice a high phosphate diet
(1.2 percent by weight) increased skin papilloma number by 50 percent compared
with a low phosphate diet (0.2 percent). Skin papillomas are the initial stage
of skin cancer development, which may progress to full carcinoma. "This is a very
well established model for the initiation and progression of cancer, and the effects
of many physiological conditions on cancer initiation have been measured this
way," said senior author George Beck, assistant professor of medicine (endocrinology)
and a member of the Winship Cancer Institute, Emory University. The study has
been published in the journal Cancer Prevention Research.
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