While 8 of 10 mothers breastfeed their newborns for a short time, the number plummets despite recommendations from experts, in part because milk production falls off.
Researchers investigating why that happens found that in women who are obese, inflammation may be the culprit.
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The link between breastfeeding and obesity
Prior research has shown that when a person is obese, chronic inflammation starts in the fat and spreads to organs and systems throughout the body. And that inflammation may disrupt the absorption of fatty acids from the blood into body tissues.
These fatty acids are the building blocks for the fats needed to feed a growing infant.
“Science has shown repeatedly that there is a strong connection between the fatty acids that you eat and the fatty acids in your blood,” says lead author Rachel Walker, a postdoctoral fellow in nutritional sciences at Penn State University. “If someone eats a lot of salmon, you will find more omega-3s in their blood. If someone else eats a lot of hamburgers, you will find more saturated fats in their blood.”
The study is among the first to examine whether fatty acids in blood are also found in breast milk, Walker notes.
“For women who are exclusively breastfeeding, the correlation was very high; most of the fatty acids that appeared in blood were also present in the breast milk,” she said in a university news release.
But for women with chronic inflammation who were struggling to make enough milk, that link was almost gone, Walker shares.
“This is strong evidence that fatty acids are not able to enter the mammary gland for women with chronic inflammation,” she adds.
For this study, researchers analyzed blood and milk from a study conducted at Cincinnati Children’s Hospital and the University of Cincinnati.
In the original study, researchers recruited 23 mothers who had very little milk despite efforts to stimulate production through frequent