Baylor College of Medicine

Stem cells may solve mystery of early pregnancy breast cancer protection

Published in OBGYN and Reproduction Week, September 29th, 2008

The answer to why an early pregnancy seems to protect against breast cancer could rest with a decrease in stem cells found after animals have given birth, said researchers at Baylor College of Medicine in a report that appears in the current issue of the journal Stem Cell.

Women who have children young, at least before the age of 30, reduce their risk of developing breast cancer, said Dr. Yi Li, a professor in the Lester and Sue Smith Breast Center at BCM. The most dramatic reduction in risk occurs in women who have their first children before the age of 24. However, the mechanism by which these early pregnancies provided protection has proved elusive.

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Source: OBGYN and Reproduction Week (2008-09-29)

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