In the book Fit Kids, the team of medical experts at kids healthy gives the following advice on healthy eating:
Do allow your children to eat according to their hunger signals. Listen when they say they’re hunger and let them stop eating when they say they are full
Do encourage your child to try different foods.
Do serve healthy packed full or nutrients.
Do stick to regular fast food restaurants.
Don’t offer sweets or a dessert as a reward for finishing a meal.
Don’t offer food as an incentive or comfort.
Don’t force your child to eat everything that’s served.
Don’t eat in front of the television.
This are some good advice by several expert in physical fitness.