In April 2020 researchers from the USA assessed the association between diet quality scores and risk of breast cancer. Dietary information was collected via a food frequency questionnaire and scores for Healthy Eating Index 2015, Alternate Healthy Eating Index 2010, alternate Mediterranean diet, and Dietary Approaches to Stop Hypertension (DASH) given. Results showed that none of the dietary pastterns were associated with the risk of breast cancer. However, being overweight and obese were significantly associated with an increased risk of breast cancer. The researchers therefore concluded that diet quality may lower breast cancer risk through its positive influence on weight status.
Dela Cruz R et al. Diet Quality and Breast Cancer Incidence in the Multiethnic Cohort. Eur J Clin Nutr. 2020 Apr 14. [Epub ahead of print]