Too Much Sugar May Raise Breast Cancer Risk
In case you needed another reason to cut back on your sugar consumption, here you go: New research in mice, published in the journal Cancer Research, suggests that a high-sugar diet may increase the risk of developing breast cancer, and also hasten the spread of the disease to the lungs.
A team at the University of Texas MD Anderson Cancer Center set out to assess how sugar intake influenced breast cancer development in mice that were randomized to various diets, including a sucrose-enriched diet, a fructose-enriched diet and a starch-control diet. The amount of sucrose and fructose the mice consumed was comparable to that found in a typical Western diet.
Compared with mice following the starch-control diet, those fed the sucrose- and fructose-enriched diets were more likely to develop breast cancer. At the age of six months, for example, the team found 30 percent of the mice fed the starch-control diet had breast cancer tumors, compared with 50 to 58 percent fed the sucrose-enriched diet.
Also, the mice fed the high-sugar diets had significantly more tumors on the lungs than those fed the starch-control diet, suggesting high sugar intake speeds up breast cancer metastasis.
The finding is particularly noteworthy, given the steady rise in sugar consumption in the U.S. It has reached about 100 pounds per person annually, or the equivalent of around 30 tsps of sugar a day.
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