Women who haven't had a full-term pregnancy or have their first child after age 30 have a higher risk of breast cancer compared to women who gave birth before age When breast cells are made in adolescence, they are immature and very active until your first full-term pregnancy. The immature breast cells respond to the hormone estrogen as well as hormone-disrupting chemicals in products.
Women's risk of breast cancer was highest about 5 years after childbirth, and lasted more than 20 years, compared with women who have never given birth, and breastfeeding did not appear to attenuate the risk, a large pooled analysis found. When comparing nulliparous women to parous women, an increased risk of breast cancer peaked at about 5 years after giving birth HR 1. Moreover, this association was not modified by breastfeeding, and varied according to estrogen receptor ER expression, age at first birth, parity, and family history, the authors wrote in the Annals of Internal Medicine.
Compared with women who have never given birth, those who recently had babies may have a slight increased risk of breast cancer that peaks after about five years and then gradually declines, according to a study published this week. The results sound disturbing, especially for women who already have more than enough stress taking care of young children. But even with the increase, the risk of breast cancer in young women before menopause remains very low, researchers say.
December 10, Younger women who have recently had a child may have a higher risk of breast cancer than their peers of the same age who do not have children, according to a large-scale analysis co-led by a University of North Carolina Lineberger Comprehensive Cancer Center researcher. The findings, published in the Annals of Internal Medicinemay seem contrary to conventional wisdom that childbirth is protective against breast cancer.
Is it safe to have a mammogram while pregnant? How is breast cancer during pregnancy diagnosed? Can I continue my pregnancy if I have breast cancer?
By Chelsea Whyte. A new study of the populations of Denmark and Norway offers clues. Mads Melbye at the Statens Serum Institute in Denmark and his colleagues used national registries on childbirth and cancer that included 2.
Previous research has highlighted how women under the age of 30 can reduce their risk of contracting breast cancer later in life by having a baby. Women's bodies undergo a "striking" change during a specific week of pregnancy that can significantly reduce their risk of developing breast cancer later in life, scientists said Tuesday. But a new study by experts in Denmark and Norway claims to have identified the precise week of pregnancy when the change occurs.
Your age at the time of a first pregnancy can lower the risk of breast cancer. You've probably heard this statistic, but what ages are we talking about, and why would this be true? Most of the benefits of having a baby are intangible, emotional, and social.
The results also found that women younger than 55 who had a full-term pregnancy had a slightly higher risk of developing breast cancer during the study. The research was published online on Dec. You likely saw many news reports about this study concluding that giving birth increases breast cancer risk.