group,bmi_category,reclassification_pct,direction,source Athletes/muscular,Normal to Overweight,30,BMI overestimates risk,Romero-Corral 2008 Adults 65+,Normal to Higher risk,25,BMI underestimates risk,Various South/East Asian,Normal to Elevated risk,20,Wrong thresholds,WHO 2004 General population,Any category,17,Mixed,Ashwell 2012 Women,Normal to Elevated risk,18,BMI underestimates risk,Various Men,Overweight to Normal risk,12,BMI overestimates risk,Various