I would have liked to see your son's height as well.The average weight for an eight year old boy is 25kg. Your son's weight is obviously below average but not as much as you may think. HIs weight is on the 25th percentile line of the normal weight chart for boys;this means that he is in the lower 25% for weight for boys of 8 years. This is still well within normal limits. Your son appears to be healthy and happy. He actually seems to eat a good healthy diet,so there is no need to worry about him too much. He is probably following a family pattern with regard to his weight.
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