The average weight for a boy of 6 years is just under 20.8kg, so in fact your son's weight is very close to the average weight.There does not appear to be any need for concern about his weight. It may be that he is taller than average for his age and has the appearance of being thin.Sometimes children are so busy and enjoy school and the breaks so much that they forget to eat. You mention that he is doing well and enjoying being at school.He will eat what he needs to eat to cover his daily nutritional requirements.
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