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Monday, August 12, 2013

Baby Formula May Increase Risk Of Adult Obesity, Diseases, Study Says

Formula-fed babies may grow too quickly and may be more susceptible than breastfed babies to obesity and other chronic diseases later in life, a new study says.



Five formula-fed baby rhesus monkeys grew faster and larger than five breastfed rhesus monkey babies, and had higher insulin levels after just one week, lead study author Carolyn Slupsky, a researcher at University of California, Davis, told The Huffington Post. The study was funded by

Fonterra Research and Development Centre, an arm of the New Zealand-based global dairy giant, which makes baby formula, and was published in the June issue of Journal of Proteome Research.

"This is the fist time somebody has glimpsed into the mechanism of what's going on with formula," Slumpsky said. The results, she said, should be "a call to arms to the formula companies to come up with better formulas that are going to ensure the health of our future population."

The UC Davis researchers closely monitored the monkey babies' weight and feeding, and took weekly blood and urine samples for three months.

In addition to having higher insulin and amino acid levels, the formula-fed babies had microbes in their digestive tracts that were "completely different" than those in the breastfed babies, the study says.

This may put formula-fed babies at a higher risk of a wide range of health issues, such as obesity, diabetes, liver problems and cardiovascular disease, Slumpsky said.

Part of the difference may be explained by an excess of protein in formula milk. Human milk is 8 percent to 9 percent protein, and rhesus monkey milk is 11.6 percent protein. But formula has 18.3 percent protein.

"The quality of protein in formula is not the same as in human milk, so formula companies decided to add more of it to make up for any deficits," Slumpsky explained. "But that may be problematic."

A study in 2010 suggested that parents may overfeed bottle-fed babies, while breastfed babies limit their intake because they have to work hard to get it. Slumpsky said she does not think that was a factor in her study because the formula-fed baby monkeys fed themselves by sucking on a bottle when they were hungry.

Slumpsky said researchers at UC Davis are working with formula companies to create formula that more closely resembles human breast milk.

"After all of this time, we still don’t fully understand what all the components of the amazing substance that is human breast milk," Slumpsky said. "But now that we have a better ability to measure what we couldn’t before, we are in a position to actually improve formula."

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