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Health & Pregnancy

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Breastfeeding Cuts Metabolic Syndrome

Study: Breastfeeding Moms Less Likely to Develop Risk Factors for Heart Disease and Diabetes
WebMD Health News
Reviewed by Louise Chang, MD

June 8, 2009 -- Women who breastfeed their babies may be less likely to develop metabolic syndrome, a cluster of risk factors that makes heart disease and diabetes more likely.

So say researchers who studied data from a study of 1,390 women who were followed for 20 years, starting when they were 18-30 years old.

Metabolic syndrome is diagnosed when people have at least three of the following traits:

None of the women had metabolic syndrome when the study began in 1985-1986. When the study ended 20 years later, 704 of the women had had at least one baby, and 120 women had been diagnosed with metabolic syndrome.

Metabolic syndrome was rarer among women who reported breastfeeding their babies. The longer they breastfed their babies during the first nine months after birth, the less likely they were to be diagnosed with metabolic syndrome during the 20-year study.

The reason for that isn't clear, but the findings held regardless of the women's preconception measurements, body mass index (BMI), lifestyle, and socioeconomic factors. The results were stronger for women who had gestational diabetes during pregnancy.

"Women who had breastfed babies for longer than one month were less likely in subsequent years to develop the metabolic syndrome," Erica Gunderson, PhD, tells WebMD in an email. "An additional new finding from this study is that breastfeeding also conferred long-term health benefits for women with a history of gestational diabetes mellitus."

Gunderson's team presented their findings on June 6 in New Orleans at the American Diabetes Association's 69th annual Scientific Sessions meeting.

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