Key clinical point: According to an analysis of two large prospective US-based cohorts, the consumption of olive oil was not associated with an increased risk for breast cancer (BC) among women.
Major finding: C ompared with women who never or rarely consumed olive oil, those with the highest consumption of olive oil (>1/2 tablespoon/day or >7 g/day) did not report an increased risk of developing BC (hazard ratio 1.01; 95% CI 0.93-1.09).
Study details: Findings are from an analysis of two large prospective cohorts of women who were free of cancer at baseline, the Nurses’ Health Study (n = 71,330) and Nurses’ Health Study II (n = 93,295), of whom 9638 women developed invasive BC after 3,744,068 person-years of follow-up.
Disclosures: This study was supported by the US National Institutes of Health and other sources. The authors declared no conflicts of interest.
Source: Romanos-Nanclares A et al. Consumption of olive oil and risk of breast cancer in U.S. women: Results from the Nurses' Health Studies. Br J Cancer. 2023 (Jun 13). Doi: 10.1038/s41416-023-02306-x