Insulin resistance may be present in 4 year olds. The function of insulin is to process sugar, promote the conversion of sugar into glycogen, regulate carbohydrate and fat metabolism, and control blood glucose balance. With the gradual increase of desserts, many children like to eat high-sugar foods, such as cakes, cookies, cream, lollipops and other sugary snacks and desserts. After a large amount of sugar intake, the pancreas will continue to secrete a large amount of insulin to control blood glucose, and in the long run, insulin resistance may occur. After insulin resistance, sugar can not be converted, it will cause sugar metabolism disorder. A large amount of sugar can not be excreted and utilized properly, it will be turned into fat, this situation insulin resistance children will be more obese, and accompanied by a strong sense of hunger. If you suspect that your 4 year old child has insulin resistance, you should go to the hospital in time for diagnosis and proper treatment. Usually, they should control sugar intake and do more outdoor exercise.