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New research shows that women who are taking insulin for diabetes treatment are at a higher risk of dense breasts. Researchers from the University of Southern Denmark in Esbjerg are responsible for the finding, and state that women who take insulin have significantly increased breast density when compared to women without diabetes. However, women who took oral medications like metformin rather than insulin were less likely to experience dense breasts.
This information is critical when considering the implications of dense breasts: Women with breasts that were at least 75% dense had a 4-6 times higher risk of developing breast cancer than women with a breast density of 25% or less.
These findings were presented at the European Breast Cancer Conference on March 9, 2016.