Breast cancer and hormone-replacement therapy in the Million Women Study

06 Aug 2003Million Women Study Collaborators,

Current use of hormone-replacement therapy is associated with an increased risk of incident and fatal breast cancer; the effect is substantially greater for oestrogen-progestagen combinations than for other types of hormone-replacement therapy.

Cohort Study
1 effect
5 years
1084110 subjects

Reported Outcomes


Hormone Replacement Therapy Manufactured risk & protective factor
Hormone Repla...

Breast Cancer Reproductive outcome
Breast Cancer

Strong Increase

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