Expatriate international health insurance customers may wish to tell their children eating fruit and vegetables can make them better looking.
Lecturer in nutrition, physical activity and public health at the University of Bristol Sue Baic noted health problems are less important to young people than they are to adults.
Cancer and heart disease seem "such a long way away" for children but physical appearance is important to them, she explained.
If eating healthy foodstuffs is said to make people "more likely to be a healthy weight", with nicer skin and hair, this can be "really useful" in enforcing good nutritional habits, the expert declared.
Providing babies and infants with home-cooked meals can also enhance their likelihood of consuming fruit and vegetables in older age, research from De Montford University in Leicestershire revealed.
Poor eating habits among children, as well as a lack of exercise and other unhealthy lifestyle choices, can increase the likelihood of them suffering from serious health problems in adulthood.