Increased selenium levels associated with reduced risk of colorectal cancer

the ONA take:

Increased levels of selenium, a mineral found in soil and some foods that is key to metabolism function, have been associated with a lower risk of colorectal cancer.

Research conducted by investigators based at Newcastle University, UK, the International Agency for research on Cancer (IARC-WHO), and the Royal College of Surgeons in Ireland, determined that Europeans average 80 micrograms of selenium, well below the 110-170 range seen in North America.

These lower selenium averages are probably due to a lower selenium soil content in Europe. (Current recommended dietary allowance [RDA] of selenium for adults is at least 55 micrograms per day, with a safe upper limit of 400 micrograms per day.) 

The team examined selenium levels in the blood as well as selenoprotein O P levels, and they determined that a higher selenium level correlates to a lower colorectal cancer risk, with a greater correlation for women.

Although they acknowledge the need for additional study, they feel that a dietary supplement containing selenium could be beneficial for populations in which naturally occurring selenium levels are insufficient.

Increased selenium levels associated with reduced risk of colorectal cancer
Increased levels of selenium have been associated with a lower risk of colorectal cancer.
Higher levels of selenium are associated with a decreased risk of colorectal cancer, according to new research* published in the International Journal of Cancer.
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