Weight of Older Siblings Affects Younger Kids
A survey of more than 1,100 single-child and about 800 two-child families has unearthed some interesting findings about obesity. About 12 percent of both younger siblings and only children were obese, but just 8 percent of older siblings were. Having an obese parent doubled the obesity risk for older siblings and only children, but made no difference in younger siblings. An older sibling’s status did, though: A boy’s risk for obesity was 11 times higher if he had an obese older brother and seven times higher with an obese older sister. A girl’s risk for obesity increased nearly ninefold if she had an obese older sister but wasn’t affected by her older brother’s obesity status.
Source: American Journal of Preventive Medicine, published online July 8, 2014