Macro partitioning
High dietary intake of omega-6 polyunsaturated fatty acids (specifically linoleic acid) is positively associated with an increased risk of breast cancer, particularly in individuals with specific genetic variants affecting omega-6 metabolism.
If you have a family history of breast cancer or genetic risks, consider reducing high-omega-6 oils (corn, soybean, sunflower) and increasing omega-3 sources. This may help mitigate risk, especially if you have genetic variants affecting fat metabolism.
recent epidemiologic studies have found a positive association between dietary omega-6 PUFAs and breast cancer risk
Why this rating
Based on observational studies and animal models; the paper explicitly states these do not demonstrate cause-effect relationship definitively.
Source
New insights into the health effects of dietary saturated and omega-6 and omega-3 polyunsaturated fatty acids
Michel de Lorgeril et al. · BMC Medicine · 2012
DOI 10.1186/1741-7015-10-50
More from this paper
- Polyphenols found in the Mediterranean diet (e.g., from red wine and grapes) increase the endogenous synthesis of long-chain omega-3 fatty acids, while high omega-6 intake inhibits this synthesis.Good
- Replacing saturated fats with high intakes of omega-6 polyunsaturated fatty acids (PUFAs) fails to prevent cardiovascular disease and may increase cancer risk, whereas a diet low in both saturated and omega-6 fats with moderate omega-3 intake reduces risk.Moderate
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