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08 February 2011

Giving baby solid foods too early linked to obesity later

Babies who were formula-fed and introduced to solid foods before they were four months old were more likely to be obese when they were three, researchers report

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Babies who were formula-fed and introduced to solid foods before they were four months old were more likely to be obese when they were three, researchers report.

The timing of solid foods didn't increase the odds of becoming obese in youngsters who were breast-fed. But among children who were never breast-fed - or who stopped breast-feeding before the age of four months - introducing solid foods before four months of age was linked to a six-fold increase in the risk of obesity, according to the research in Pediatrics.

"Our study results suggest that adhering to the current American Academy of Pediatrics guidelines of waiting till four months to introduce solids has the potential to reduce the risk of obesity later on," explained study author Dr. Susanna Y. Huh, a paediatric gastroenterologist at Children's Hospital Boston.

Early feeding practises are believed to set the stage for later eating patterns and weight status later in life. But, previous studies hadn't provided consistent answers as to whether or not the timing of the introduction of solid foods could make a difference in a child's weight later in life, according to background information in the study, which was funded by the US National Institutes of Health.

Pregnant women studied

For this study, the researchers reviewed data on 847 children enrolled in Project Viva, a long-term study of women and their offspring. The women were initially recruited before the birth of their babies, and they were followed for at least three years.

The researchers found that 67% of the children were breast-fed and 32% were formula-fed. When the youngsters were three years old, 9% were considered obese.

Babies who were fed formula, and then introduced to solids foods before they were four 4 months old, were 6.3 times more likely to be obese when they were three years old - an association that was not explained by early rapid growth.

No such association was found for the breast-fed infants.

"Among breast-fed infants, the timing of the introduction of solids didn't seem to matter," said study co-author Sheryl L. Rifas-Shiman, a research associate at Harvard Medical School and the Harvard Pilgrim Healthcare Institute in Boston.

When to introduce solid foods

Huh said it's not clear why the introduction of solids before four months appeared to make such a significant difference for the formula-fed babies. But, the researchers theorise that "mothers of infants who are breast-fed may better understand and recognise their babies hunger and satiety cues. Mothers of formula-fed infants may not recognise these as well," said Huh.

"This study reinforces a lot of things we normally recommend," said Dr Goutham Rao, director of the weight management and wellness centre at Children's Hospital of Pittsburgh. "Breast-feeding is best, and it's a useful way to make sure your child is healthy. In terms of solid food introduction, it's wise to delay it until four to six months," he said.

But, there are other things that parents need to do to keep their children healthy and at a proper weight, he said.

"What is it about the introduction of solid food early that is associated with obesity? Does the family have other unhealthy behaviours? Maybe they're allowing the child to eat fast food at two. Giving cereal at an early age may be a marker for something else that wasn't measured in this study," he explained.

To keep your child at a healthy weight, Rao said it's a good idea to stick with the AAP recommendations of introducing solids at 4 to 6 months. He also said that parents should introduce cereals and vegetables before introducing sweet foods. He advised not giving children high sugar or high fat foods, and said it's important to stay in tune with your child's hunger cues.

"A good rule for portion size is that a meal should be about the size of a child's fist," he said.


(Copyright © 2010 HealthDay. All rights reserved.)

 
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