If you’re the youngest or a middle child, at one point you might’ve wished you were the eldest in the family line. However, you might now have a reason to be perfectly happy where you are. According to a new study, firstborn girls have 29 percent greater odds of being overweight and 40 percent greater odds of being obese than their second-born sisters.

"If you look at the health risks of those that are firstborn, you find that firstborns are more insulin resistant than later borns, which is a risk factor for diabetes, and they have higher blood pressure than later borns,"said lead researcher Dr. Wayne Cutfield, a professor of pediatric endocrinology at the Liggins Institute of the University of Auckland in New Zealand.

Previous studies have shown similar results in boys as well. One reason might be because a mother’s blood vessels are narrower in the first pregnancy, which causes less blood and fewer nutrients to reach the placenta. Despite these findings, the main perpetrator of obesity is—by and large—an unhealthy lifestyle, note researchers.

If obesity is of concern, talk to your physician or dietician about devising a nutritious diet plan and consistent exercise routine regardless of what your birth order is. What are some ways you defy ‘obesity risk’?



HealthDay: Oldest Sister at Greater Risk of Obesity, Study Contends