Wolfa expected WebMed, the discovery follows a 10-year study of more than 3,000 patients in China and published online in October in the International Journal of Cancer.
During the study, it was relied on the extent to which patients ate nuts on one occasion only, 5 years after the diagnosis of breast cancer.
The researchers reported a dose-response pattern between eating walnuts and the overall risk of breast cancer recurrence and death, with those consuming the highest amounts having the lowest risk.
“Nuts are important components of healthy diets. The promotion of a modifiable lifestyle factor should be emphasized in guidelines for breast cancer survivors,” said Chiu Ao Xu of Vanderbilt University in Nashville, Tennessee, and co-authors.
“The association with disease-free survival is very strong, but as with all observational studies, this report shows an association rather than a causal relationship.”
“Based on this study alone, the evidence is weak,” said Wendy Chen, a breast oncologist at the Dana-Farber Cancer Institute in Boston, who was asked to comment on the new research.
“People who ate nuts generally had more education, higher incomes, and lower body mass index,” she continued and cancerous diseases In the early stages and a more physically active life – all factors associated with better breast cancer survival.”
“The authors tried to control for these factors,” Chen admits, but it’s hard to know if nut consumption “really” made the difference.
She also noted that the study group was also “a little unusual” because people had to survive 5 years after diagnosis to be included in the analysis, and this does not represent breast cancer survivors.
The overall evidence, including this study, is that the beneficial association between nut intake and breast cancer is “limited”, an epidemiologist at the University of California, San Francisco, Irene Van Plarigan, PhD, an epidemiologist at the University of California, San Francisco. She also previously led a study that noted the benefits of eating walnuts for colon cancer patients.
“Nuts are an energy-dense food, so serving sizes should be kept small,” she said, explaining that a serving should be about 1 ounce or 1/4 cup of nuts or 1-2 tablespoons of nut butter.