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Progesterone


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Progesterone is a hormone produced in the ovaries during the second half of the menstrual cycle that helps prepare the uterus for pregnancy. Progesterone is also produced by the placenta during pregnancy and helps the placenta function properly.

At the end of pregnancy, a drop in progesterone helps start labor contractions.

When a woman reaches the end of her reproductive years and begins menopause, her level of progesterone declines.

Credits

AuthorJeannette Curtis
AuthorCaroline Rea, RN, BS, MS
EditorKathleen M. Ariss, MS
EditorSusan Van Houten, RN, BSN, MBA
Associate EditorTracy Landauer
Associate EditorPat Truman, MATC
Primary Medical ReviewerPatrice Burgess, MD

- Family Medicine
Primary Medical ReviewerAdam Husney, MD

- Family Medicine
Primary Medical ReviewerKathleen Romito, MD

- Family Medicine
Last UpdatedMay 25, 2007

Last Updated: May 25, 2007
Author:
Jeannette Curtis

Caroline Rea, RN, BS, MS
Medical Review:
Patrice Burgess, MD - Family Medicine

Adam Husney, MD - Family Medicine

Kathleen Romito, MD - Family Medicine


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