A study published in September 2015 by JAMA Internal Medicine has revealed that a Mediterranean diet may help to reduce breast cancer risk. Breast cancer incidence has increased by more than 20 percent across the world since 2008.
The study followed women for an average of 4.8 years while controlling for several variables, including BMI (body mass index), physical activity, age, smoking, and family history of cancer. There were three meal plans randomly assigned to the women in the study: A Mediterranean diet supplemented with extra-virgin olive oil, a Mediterranean diet supplemented with mixed nuts, and control group whose participants were only advised to reduce dietary fat.
Of the 4,152 women in the study, 35 developed breast cancer. The average age of the women in the study was 68 years. To summarize the findings, there were more cases of breast cancer in the women participating in the control group when compared with the women eating the Mediterranean diets.
A Mediterranean diet is one that is rich in olive oil, whole grains, vegetables, and fruit. It is also low in red meat and dairy products.