Though it might prudent not say it outright, researchers are trying to figure out whether altering a woman's breast density might lower her risk of cancer. The key lies in locating the genes responsible for breast density. According to a 2005 study, digital mammograms are more effective than X-ray film at detecting cancer in women with dense breasts. Ultrasound is also a better option as it can detect tumors that are not detected by a mammogram. Many women wonder if understanding the implications of breast density can lead to early diagnosis.

Study Findings
a. According to a study published in the New England Journal of Medicine, if 75 per cent of a woman's breast tissue is dense, she is five time more likely to develop breast cancer.
b. Physicians believe that dense tissues can cloak tumors on a mammogram.
c. Dense tissue contains different types of connective tissue and epithelial cells.
d. Epithelial cells are responsible for most tumors.
e. According to research, in the case of dense breasts, some process involving connective tissue helps tumors grow.
f. Collagen is found in greater proportion in dense breasts.
g. Hormones found in fatty tissue also lead to cancer.
h. Breast density changes after a woman givers birth and as she ages and reaches menopause.
i. Hormone therapy that includes estrogen and progesterone increases density by stimulating the growth of the epithelium and connective tissues.
j. Tamoxifen reduces density by shrinking those tissues.
k. Exercise is also beneficial.
l. Women who consume more alcohol and fat are susceptible to higher density.
m. Women who are at a higher risk of breast cancer have various options other than the regular film mammograms. Digital mammography, Ultrasound, Magnetic resonance imaging ( MRI ) & Digital tomosynthesis are a few new and upcoming technologies in the field of breast screening.