A study conducted by social enterprise Mend and the online community Netmums has pointed a key reason behind child obesity.
Parents are hesitant to talk to their children about weight issues, worried if the discussion could affect the child psychologically.
Parents did not want to broach the subject as they feared hurting the self esteem of the child which could possibly fuel eating disorders.
Mr. Paul Sacher, Mend's co-founder and chief research and development officer, said: "The easiest way to check if your child is a healthy weight or not is to measure their weight and height and then to use an online BMI calculator".
Parents must guide their children in a positive manner and perhaps keep certain checks along the way to evaluate physical and emotional health.