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Mom’s Weight During Pregnancy Affects Her Daughter’s Risk Of Being Obese

Date:
July 5, 2009
Source:
University of North Carolina at Chapel Hill School of Medicine
Summary:
A mother's weight and the amount she gains during pregnancy both impact her daughter's risk of obesity decades later, according to a new study.

A mother’s weight and the amount she gains during pregnancy both impact her daughter’s risk of obesity decades later, according to a new study by Alison Stuebe, M.D., assistant professor of obstetrics and gynecology at the University of North Carolina at Chapel Hill School of Medicine.

“The findings are especially important because of the growing epidemic of obesity in women,” Stuebe says. “If we can help women reach a healthy weight before they start a family, we can make a difference for two generations.”

Stuebe analyzed data on mothers’ recalled weights and weight gain for more than 24,000 mother-daughter pairs. The heavier a mother was before her pregnancy, the more likely her daughter was to be obese in later life. For instance, an average-height mother who weighed 150 pounds before pregnancy was twice as likely to have a daughter who was obese at age 18 as a mother who weighed 125 pounds before pregnancy.

Weight gain during pregnancy mattered, too – both too little and too much weight gain increased a daughter’s risk of becoming obese, especially if a mother was overweight before she got pregnant.

“Women should aim for a healthy weight before they get pregnant, and then gain a moderate amount,” Stuebe said.

Using the Nurses’ Health Study II, Stuebe analyzed data for more than 24,000 mother-daughter pairs. The daughters, all registered nurses, are part of the Nurses’ Health Study. They reported their weight at age 18 when they joined the study in 1989, and they reported their current weight in 2001.

In 2001, each mothers was asked to recall her pre-pregnancy height and weight, her weight gain while she were pregnant with her daughter, and her daughters’ weight at birth.

Daughters whose mothers gained 15 to 19 pounds during pregnancy had the lowest risk of obesity. Compared to this group, daughters whose mothers gained more than 40 pounds while pregnant were almost twice as likely to be obese at age 18 and later in life.

Too little weight gain was also linked with a daughter’s obesity risk. Pregnancy weight gain of less than 10 pounds was associated with a 1.5-fold increase in the odds of being obese at 18 and a 1.3-fold increase in odds of being obese in later life.

Stuebe performed the study while at Brigham and Women’s Hospital. Co-authors are Michele Forman, of M. D. Anderson Cancer Center, and Karin B. Michels, also of Brigham and Women’s and Harvard Medical School. It was published June 16, 2009, in the online version of the International Journal of Obesity.


Story Source:

The above story is based on materials provided by University of North Carolina at Chapel Hill School of Medicine. Note: Materials may be edited for content and length.


Cite This Page:

University of North Carolina at Chapel Hill School of Medicine. "Mom’s Weight During Pregnancy Affects Her Daughter’s Risk Of Being Obese." ScienceDaily. ScienceDaily, 5 July 2009. <www.sciencedaily.com/releases/2009/07/090703110637.htm>.
University of North Carolina at Chapel Hill School of Medicine. (2009, July 5). Mom’s Weight During Pregnancy Affects Her Daughter’s Risk Of Being Obese. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2009/07/090703110637.htm
University of North Carolina at Chapel Hill School of Medicine. "Mom’s Weight During Pregnancy Affects Her Daughter’s Risk Of Being Obese." ScienceDaily. www.sciencedaily.com/releases/2009/07/090703110637.htm (accessed April 21, 2014).

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