- About 32% of the children received antibiotics before 6 months of age, increasing to almost 75% by 23 months of age.
- Children who were never breastfed or had mothers who smoked during the first trimester of pregnancy were more likely to be exposed to antibiotics before 2 years of age.
- After accounting for other risk factors, children exposed to antibiotics before 6 months of age were 22% more likely to be overweight at 38 months.
- No consistent association was shown between overweight and antibiotic exposure from 6-14 or 15-23 months.
What does this mean for you and your baby?
Trasande L. et al. Infant Antibiotic Exposure and Early-Life Body Mass. Int J Obes (Lond). 2012 Aug 21. [Epub ahead of print]