Rural Versus Urban Differences in BMI (image) Imperial College London Share Print E-Mail Caption A positive number shows a higher urban mean BMI, and a negative number a higher rural mean BMI. Credit Ezzati et al. Nature 2019 Usage Restrictions Usage in relation to associated Nature paper Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.