In a study from Sun Yat-sen University, scientists found that a diet high in omega-3 is associated with a reduced risk for breast cancer among women in China.
They examined the associations between breast cancer risk and intake of omega-3 in Chinese women, including 1,589 cases and 1,621 age-frequency-matched controls.
A validated food frequency questionnaire was used to assess dietary data.
The researchers found an association between a higher intake of fatty fish high in omega-3 and a lower risk for breast cancer.
Foods high in alpha-linolenic acid, eicosapentaenoic acid, docosapentaenoic acid, and docosahexaenoic acid also were linked with a lower breast cancer risk.
These benefits were stronger for younger women and women with estrogen receptor (ER)-positive, progesterone receptor (PR)-positive, and ER-positive PR-positive tumors.
The team also found in obese/overweight women, but not in women of normal weight, a reduced risk for breast cancer was strongly linked to increasing omega-3 intake.
Researchers say this study highlights the effect of lifestyle habits and, specifically, dietary intake of polyunsaturated fatty acids on breast cancer risk.
For more information about cancer prevention, please see recent studies about antibiotics linked to higher colon cancer risk, and results showing what you need to know about supplements and cancer.
The study was conducted by Zhuo-Lin Zhang et al and published in Menopause.
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