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Ask About Breast Density

Ask About Breast Density

Women whose mammograms have revealed breast density readings of 75% or more have a breast cancer risk 4 to 5 times higher than that of women with low density scores, according to recent research. One theory is that denser breasts result from higher levels of estrogen—making exercise particularly important (see #8). "Shrinking your body fat also changes growth factors, signaling proteins such as adipokines and hormones like insulin in ways that tend to turn off cancer-promoting processes in cells," Walker says.