To achieve specific aim 1, investigators were performed secondary data analysis to determine the usual dietary and physical activity pattern of the children. Investigators were analyzed data on childhood dietary pattern following food frequency questionnaire and food preference were also be calculated. There were 20 food groups for listing food preference that has been collected through 7 days recall method. These food groups were analyzed for children's food preference by rating 'preferred' and 'not preferred' as well as frequency of consumption within 24 hours and last 7 days. Thus we were determined the dietary patterns of children 5-18 years of age with normal BMI, high BMI and low-BMI which has already been defined in the study by following the International Obesity Task Force (IOTF) guideline. In order to develop healthy eating guideline, we were developed a dietary guideline that would be suitable for children with normal weight, and make adjustment in the dietary pattern for underweight and overweight children. We will determine appropriate portion size of carbohydrates, proteins, fats, vitamins and minerals required for a balanced nutritional supply for different ages. The total daily calorie intake should comprise of: Fat - 30-35%, Protein - 15% and Carbohydrates - 50-55% for the children during their school time. Vitamins and minerals will come from a range of fruits and vegetables along within these three major food groups, including 3 serving of vegetable and 2 serving of fruits.