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UCSB anthropologists finds high levels of omega-3 fatty acids in breast milk of Amerindian women
Date:6/8/2012

acid (an omega-6), as well as trans fats. These high levels of omega-6 have been linked to increased risks of obesity, inflammation, and cardiovascular disease, and interfere with the synthesis of DHA and other omega-3 fatty acids.

"The Tsimane mothers' average milk DHA percentage was 400 percent higher than that of the Cincinnati mothers, while their average percentages of linoleic and trans fatty acids were 84 percent and 260 percent lower, respectively," said Martin. "Despite living in economically impoverished conditions, Tsimane mothers produce breast milk that has more balanced and potentially beneficial fatty acid composition as compared to milk from U.S. mothers."

The study comes in the wake of the May 21 issue of Time magazine, which reignited debate over the appropriate age at which a child should top nursing. "Buzz about the recent Time magazine cover missed the point," noted Steven Gaulin, professor of anthropology at UCSB, and one of the study's co-authors. "The American diet is eroding one of the most important benefits breast milk can provide fats that are critical to infant brain development. It's not surprising that, among developed nations, American children are last on international tests of math and science."

The study's findings highlight important questions about infant formula, the fatty acid content of which is based on the breast milk of U.S. mothers. "The study suggests that standards of fatty acid composition for infant formulas should be derived from populations such as the Tsimane," Martin explained. "And nutritional recommendations for infants should account for the prolonged requirements of fatty acids that breast milk naturally provides."


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Contact: Andrea Estrada
andrea.estrada@ia.ucsb.edu
805-893-4620
University of California - Santa Barbara
Source:Eurekalert  

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