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Nut consumption may aid colon cancer survival



People with stage III colon cancer who regularly eat nuts are at significantly lower risk of cancer recurrence and mortality than those who don’t, according to a new, large study led by researchers at Yale Cancer Center.

 

The study followed 826 participants in a clinical trial for a median of 6.5 years after they were treated with surgery and chemotherapy. Those who regularly consumed at least two, one-ounce servings of nuts each week demonstrated a 42% improvement in disease-free survival and a 57% improvement in overall survival.

 

“Further analysis of this cohort revealed that disease-free survival increased by 46% among the subgroup of nut consumers who ate tree nuts rather than peanuts,” said Charles S. Fuchs, M.D., director of Yale Cancer Center and senior author of the study. Tree nuts include almonds, walnuts, hazelnuts, cashews, and pecans, among others. In contrast, peanuts are actually in the legume family of foods.

 

“These findings are in keeping with several other observational studies that indicate that a slew of healthy behaviours — including increased physical activity, keeping a healthy weight, and lower intake of sugar and sweetened beverages — improve colon cancer outcomes,” said Temidayo Fadelu, M.D., a postdoctoral fellow at Dana-Farber Cancer Institute and lead author of the paper. “The results highlight the importance of emphasizing dietary and lifestyle factors in colon cancer survivorship.”

 

Many previous studies have reported that nuts, among other health benefits, may help to reduce insulin resistance, a condition in which the body has difficulty processing the insulin hormone. Insulin resistance leads to unhealthy levels of sugar in the blood and is often a predecessor to type 2 diabetes and related illnesses.

 

Nuts also might play a positive role by satisfying hunger with less intake of carbohydrates or other foods associated with poor outcomes, Fuchs noted.

 

Patients may not be eating nuts due to concerns about the high fat content, said Fuchs. For example, a one-ounce serving of about 24 almonds holds about 200 calories, including 14 grams of fat. “People ask me if increasing nut consumption will lead to obesity, which leads to worse outcomes,” he said. “But what’s really interesting is that in our studies, and across the scientific literature in general, regular consumers of nuts tend to be leaner.”

 

Yale University
news.yale.edu/2018/02/28/nut-consumption-may-aid-colon-cancer-survival



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