According to a new study in the Journal of Pediatrics, babies who are bottle-fed until age two are more likely to start school obese. U.S. researchers looked at nearly 7,000 kids who were still regular bottle users at 24 months, and found that they were 30 per cent more likely to be obese by age five-and-a-half. Meanwhile, 22 per cent of the two-year-olds they studied were using a bottle as their main drink container, or were put to bed with a bottle with a drink that provided calories. Nearly one-quarter of them were obese by age five, compared to 16 per cent of those who hadn’t been using a bottle at age two. Parents should stop using a bottle by age one so they don’t risk overfeeding, they said.