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Hormones and breast cancer: What you should know
New research again links increased breast cancer risk to longer use of hormone therapy.
The link between hormone therapy and breast cancer has been recognized for years. But an analysis published Aug. 29, 2019, in The Lancet has added some additional information to the discussion. The analysis looked at 58 studies that included information on the type and timing of hormone use in individual women, and their body mass index. Researchers began gathering the studies in 1992 and continued until 2018.
We asked Dr. Wendy Chen, an assistant professor of medicine at Harvard Medical School, to help us sort through both the old and new information on hormone use and breast cancer and what it means for women considering starting hormone therapy.
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