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Never Breastfeeding Linked to Increased Risk of T1DM

Among those who were breastfed, no link for duration of full, any breastfeeding with reduced risk

breastfeeding

FRIDAY, May 12, 2017 (HealthDay News) -- Never breastfeeding seems to be associated with increased risk of type 1 diabetes, according to a study published online May 9 in Diabetes Care.

Nicolai A. Lund-Blix, from Oslo University Hospital in Norway, and colleagues followed two population-based cohorts of children from birth (1996 to 2009) to 2014 or 2015 (Denmark or Norway). Data were analyzed for 155,392 children. Infant dietary practices at age 6 to 18 months were reported by parents.

The researchers identified type 1 diabetes in 504 children during follow-up, with the incidence of type 1 diabetes being 30.5 and 23.5 per 100,000 person-years in the Norwegian and Danish cohorts, respectively. The risk of type 1 diabetes was increased two-fold for children who were never breastfed versus those who were breastfed (hazard ratio, 2.29; 95 percent confidence interval, 1.14 to 4.61). The incidence of type 1 diabetes was independent of duration of full breastfeeding (hazard ratio per month, 0.99; 95 percent confidence interval, 0.97 to 1.01) and of any breastfeeding (hazard ratio per month, 0.97; 95 percent confidence interval, 0.92 to 1.03) among those who were breastfed.

"Suggestive evidence supports the contention that breastfeeding reduces the risk of type 1 diabetes," the authors write. "Among those who were breastfed, however, no evidence indicated that prolonging full or any breastfeeding was associated with a reduced risk of type 1 diabetes."

The study was partially funded by the Novo Nordisk Foundation.

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