There some time, I was leaning on the question of the possible correlation between nutrition in early life (breastfeeding or not) and overweight in adulthood. It emerged from this synthesis (see HERE) that breastfeeding could provide a protective effect on obesity in adulthood. Reminder of the highlights of this protective effect: - Many studies have shown independently (highlighted by the meta-analysis [1] - this effect is especially visible in the rich countries (some studies have not see link effects being erased by the nature of foods introduced at weaning)-Studies of siblings (a breastfeeding / non-breastfed) show nevertheless clearly more risk in the non-breastfed child to be overweight in adulthood [2]. - The conclusion of a literature review conducted by the WHO in 2013 [3] (based on a wide range of studies) spats is a correlation between breastfeeding and a lower prevalence of overweight and obesity in the long term. WHO nevertheless states that confounding factors still remain difficult to eliminate.
A very recent French study provides new evidence An article published last month (March 2014) [4] in "The Journal of Pediatrics" by a French team (Centre for Research in Epidemiology and Biostatistics Sorbonne Paris Cité) provides a new answer to this issue. The authors point out, as in the conclusion of the WHO, a tendency to observe spats a link between breastfeeding and a lower prevalence of overweight in adulthood spats emerges but that there is not yet consensus of many scattered through the results and correct statistical adjustment is necessary so as to isolate the influence of one "feeding" parameter.
The article reports a cohort study (comparison of incidence rates of overweight among people who were breastfed and non-breastfed group). 73 children were followed from their first few months until the age of 20 years and the effect of breastfeeding (exclusive or partial combined) on fat mass was observed taking into account nutritional spats factors at weaning. Two thirds of the children were breastfed, with a maximum term of 7 1/2 months. The parameters evaluated at the age of 20 years are the size, weight, skinfold thickness, fat mass. Confounding parameters that were adjusted are the body mass index of the mother, the father's occupation.
When the usual variables are adjusted, it is not always easy to highlight the protective role of breastfeeding. As against, taking into account the "diet" at weaning (% of calories and lipids%) variable, this protective role appears spats significantly.
Like other previous studies had shown, the body mass index is not a parameter that highlight the impact of breastfeeding. A most significant parameter is the thickness of skin fold which is well aware of the fat content.
The authors also noted that consumption of fats (age 2) was significantly lower in children spats who were breastfed which "blurs" the findings on the impact of breastfeeding on body fat to adulthood. Indeed, the overall lipid or caloric restriction in the infant leads to a kind of metabolic spats adaptation which increases the risk of obesity in adulthood. spats Instead, eat fatty items as a child (within reason) is not detrimental in the long term. This is related to the resistance to leptin, the hormone that regulates fat storage and satiety.
As the authors point out, the distinction between mixed and exclusive breastfeeding has not been made and the duration of breastfeeding was not taken into account. A study on a larger number of children spats from different ethnic backgrounds and breastfeeding duration longer than 7 months half would be interesting.
Important to remember for breastfeeding moms at weaning idea: No clear messages reach mothers at weaning. Of course, they tend to be vigilant and err by providing food or milk on too low in fat. But calorie restriction at weaning could have an adverse effect on the management of fat at a later age, and erase the benefits spats of breastfeeding on this aspect. Include: [5]
The ideal
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