Women between the ages of 40 to 76 with no previous history of breast cancer and who had recently had a mammogram

A study surveyed women between the ages of 40 to 76 with no previous
history of breast cancer and who had recently had a mammogram. A total of
1,858 women completed the survey.They were asked to compare five different
risk factors to breast density:having a first-degree relative with breast cancer,
being overweight or having obesity,
drinking more than one alcoholic beverage per day, never having children,
having a prior breast biopsy.
Of the respondents, 93% thought that having a close relative with breast
cancer increased your risk more than high breast density.

The researchers then interviewed women who reported knowing their breast
density about the different risk factors and what they knew about
mitigating breast cancer risk. Few of them noted breast density as a breast
cancer risk factor.