Study: Breastfed Tots No Thinner As Adults

(WebMD)  Breastfed babies are just as likely to grow up to be overweight adults as babies who are bottle fed, new research shows.

Results from a study involving more than 35,000 female nurses seem to contradict earlier research, which prompted government health officials to recommend breastfeeding as a strategy for reducing childhood obesity.

There was a suggestion of a protective effect during early childhood, but no link was seen between breastfeeding and body weight after age 5, says Harvard Medical School associate professor Karin Michels, Ph.D.

"Even if breastfeeding is protective very early in life, this does not appear to carry through to adolescence and adulthood," Michels tells WebMD. "We certainly encourage breastfeeding, which has many positive consequences for both mother and child. But it should not be promoted as a solution for either the childhood or adult obesity epidemic."

12.5 Million Overweight Kids

The number of overweight children and teens has more than tripled in the United States since 1980, according to the CDC.

CDC figures from 2003-2004 show that 12.5 million kids between ages 2 and 19 are overweight.

Though it is clear that breastfed infants tend to gain weight more slowly during the first year of life, the link between breastfeeding and body weight later on is much more uncertain, Michels says.

The latest study is the first attempt to examine the residual impact of breastfeeding on body weight until age 40.

A total of 35,526 female nurses participating in the larger Nurses Health Study II were followed from 1989 until 2001, and their mothers were surveyed to determine if the nurses where breastfed during infancy and, if so, for how long.

Nurses exclusively breastfed during the first six months of life were no less likely to be overweight or obese during adulthood as those who were bottle fed during infancy.

A slight association was seen between infant breastfeeding and lower body weight up until age 5, but it was not significant, Michels says.

The study appears in the latest online issue of the International Journal of Obesity.

Jury Still Out
Michels says public health messages that encourage breastfeeding as a strategy for reducing later obesity overstate the case for a protective benefit.

But the chief of the nutrition branch for the CDC disagrees.

Though there is little evidence that protection lasts until adulthood, Laurence Grummer-Strawn, Ph.D., says the research as a whole continues to support a protective role for breastfeeding, at least in early life.

"The best evidence we have indicates that the [protective] effect probably diminishes over time, and that is what this study shows," he tells WebMD. "It is not very surprising that the evidence would fail to show a benefit for breastfeeding 40 years later."

Women in the U.S. who breastfeed tend to be better educated and more economically advantaged than women who choose not to breastfeed their babies. They also tend to lead healthier lifestyles, with the assumption that they promote healthier behaviors in their children.

Grummer-Strawn acknowledges that these socioeconomic influences may explain the link between breastfeeding and lower childhood body weight. But even if this proves to be the case, there are still plenty of good reasons to breastfeed.

Among other things, breastfed babies have a lower risk for developing ear infections, respiratory illness, and diarrhea early in life.

"The jury is still out on whether there is a causal relationship (between breastfeeding and childhood body weight)," Grummer-Strawn says. "The CDC continues to promote breastfeeding for a number of health reasons, including the possible prevention of overweight in children."

By Salynn Boyles
Reviewed by Louise Chang
©2006-2007 WebMD, Inc. All rights reserved

[talkingham]

I'm so sick of these articles that never mention the funding source for the study. Typically the funding source, especially if it's private industry, has a specific outcome they want to see and the researchers design the data to fit that outcome. If the researchers don't design the data they don't get the money. It's a broken system. So was the study funded by companies that produce baby formula- I wonder?

Is there any mention of what these children eat after age 5 in the article- gee I wonder if that could affect the data collection or outcome?

Like most kids in this country they are probably fed a diet of "french" fries, fried chicken, high frutose corn syrup and loads of corn syrup in every sweet thing they consume, about 12 spoons worth in every cola. Any gains of breast feeding would be wiped out by a diet based on corn sweetners and fried garbage.

[michellem99-2009]

Babies and yonug children are fat becaue..
1,Mumma shoves food in the child's mouth to quiet him/her.
2.Use food for love
3. Don't want to deny him/her what Mumma didn't have.
4.Child throws a fit if he/she don't get this/that.
I was in a store and a little girl threw her body to the floor,Mum right there. A girl child in the lady'room carrying on,hollowering at the top of her lungs.
Child runs thru the store out of control.
On mass transit acting up.
Child tell Mum what to do.
Mum the blame as she is the child's first teacher, caretaker. Mum is a 24/7 job. Fat children are not healthy. They get diabetes,heart and lung problems and the like. Fat children are bullyed in school due to being fat. They can't find clothes to fit them. I didn't have in my day what kids today have. I got my computer a month before my 52 birthday. Kids today don't know how to play as they most likely never done it. We had recess at school years ago. Heard talk the schools today don't have recess. A pity children need it.

[grammawhamma]

Geez...how much do all these needless "studies" cost and who funds them?? Kids are overweight because of play station, TV, computers, fast food diets etc. Send them outside to play...that is if your neighborhood is still safe!!