A characteristic on the mammogram in which the breast tissue is more closely packed together. Those with the highest breast density have about a five times increased risk for breast cancer. Breast density normally increases with age in premenopausal women, is maximal in perimenopause and decreases with menopause. Estrogen therapy increases breast density.
Explore All Resources
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Preventive Powers of Ovulation and Progesterone
Breast cancerBreast tenderness & lumps -
Ovulatory Disturbances: They Do Matter
Basic Physiology / HormonesBreast tenderness & lumps -
Young Women and Osteoporosis — Good news about treatment and prevention
Breast tenderness & lumpsCommon Menstrual Concerns -
Manipulating Menstruation with Hormonal Contraception — what does the Science say?
Breast tenderness & lumpsCommon Menstrual Concerns -
The Death of Hormone Replacement Therapy — Why and how to use Ovarian Hormone Therapy
Breast cancerDaily Progesterone therapy -
Perimenopause is a time of “Endogenous Ovarian Hyperstimulation”
Breast tenderness & lumpsCommon Menstrual Concerns -
Beyond “Estrogen Deficiency”—news from Women’s Health Initiative
Breast cancerEstrogen treatment
Glossary
Visit the Glossary to learn more about the specific terms used on this website.
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Breast density
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Follicular phase
The first part of the menstrual cycle before ovulation.
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