Risk of Colorectal Cancer Decreased With Higher Selenium Levels

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Risk of Colorectal Cancer Decreased With Higher Selenium Levels

A new study published in the International Journal of Cancer finds that higher levels of selenium are associated with a decreased colorectal cancer risk.

The researchers found that a higher selenium status is associated with a lower risk of colorectal cancer.

An essential micronutrient for human health, foods such as brazil nuts, shellfish, red meat and offal are rich in selenium.

According to the National Institutes of Health, selenium plays roles in reproduction, thyroid hormone metabolism and DNA syntheses, and has protective benefits against oxidative damage and infection.

Low selenium intake has been associated with increased risk of poor immune function, cognitive decline and death.

Selenium intake varies across regions due to variations of selenium in the soil where food is grown. Western Europeans, for instance, have an average selenium blood level of around 80 mcg/L, less than the 110-170 mcg/L reported in North Americans.
The Food and Nutrition Board say that the recommended dietary allowance of selenium for people over the age of 14 is 55 mcg per day.

A research team – led jointly by Newcastle University, UK, the International Agency for Research on Cancer and the Royal College of Surgeons in Ireland – studied blood samples and dietary and lifestyle information from more than 520,000 participants across 10 Western European countries.

They found that a higher selenium status is significantly associated with a lower risk of colorectal cancer.

What our study shows is a possible link between higher levels of selenium and a decreased risk of colorectal cancer and suggests that increasing selenium intake may reduce the risk of this disease.”

CAUTION: A study published in the Journal of the National Cancer Institute that found taking high doses of selenium and vitamin E supplements may increase prostate cancer risk.

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