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Eat like the Greeks to prevent breast cancer

The Mediterranean diet is known for its abundance of plant foods, fish and olive oil. Now a new study suggests that eating the diet supplemented with extra virgin olive oil may lower risk of breast cancer in women.

health and fitness Updated: Sep 15, 2015 15:45 IST
The Mediterranean diet has certain types and amounts of food. If eaten for a number of years, it has been shown to reduce the risks of many common ailments, including heart disease. (Shutterstock Photo)
The Mediterranean diet has certain types and amounts of food. If eaten for a number of years, it has been shown to reduce the risks of many common ailments, including heart disease. (Shutterstock Photo)

The Mediterranean diet is known for its abundance of plant foods, fish and olive oil. Now a new study suggests that eating the diet supplemented with extra virgin olive oil may lower risk of breast cancer in women.

"The results of the trial suggest a beneficial effect of a MeDiet (Mediterranean diet) supplemented with extra virgin olive oil in the primary prevention of breast cancer,” the study said.

Miguel Martinez-Gonzalez from University of Navarra in Pamplona, Spain, and coauthors analysed the effects of two interventions with the Mediterranean diet - supplemented with extra virgin olive oil (EVOO) or nuts - compared with advice to women to follow a low-fat diet.

Read: Now, a simple blood test can predict future risk of breast cancer

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Study participants in the two intervention groups were given EVOO (one litre per week for the participants and their families) or mixed nuts (30 grams per day).

From 2003 to 2009, 4,282 women, aged 60-80 years and at high risk of cardiovascular disease, were recruited.

Women were randomly assigned to the Mediterranean diet supplemented with EVOO, the Mediterranean diet supplemented with nuts or the control diet with advice to reduce their dietary intake of fat.

During a median follow-up of nearly five years, the researchers identified 35 confirmed incident (new) cases of malignant breast cancer.

Read: Daily glass of wine increases women's risk of breast cancer

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Women eating a Mediterranean diet supplemented with EVOO showed a 68 percent relatively lower risk of malignant breast cancer than those allocated to the control diet, the findings showed.

Women eating a Mediterranean diet supplemented with nuts showed a nonsignificant risk reduction compared with women in the control group.

The study was published online in the journal JAMA Internal Medicine.