1. Insufficient secretion of growth hormone: Obesity will change the metabolism and secretion of muscle and bone system, affect the secretion of growth hormone, and thus affect height growth.

2. Skeletal dysplasia: Obesity will increase the weight burden and cause a burden on bone development, especially in adolescence, obese children are more likely to have skeletal deformities.

3. Abnormal hormone levels: Obese children are often accompanied by insulin resistance and high insulin levels, which will affect other hormone levels and affect gonadal development and reproductive function maturity.

Therefore, it is very important to solve the problem of childhood obesity. Here are some methods that may be useful:

1. Diet control: reduce children's intake of high-calorie foods and drinks and control the amount of each meal.

2. Promote sports: Encourage children to do appropriate sports, such as swimming, running and basketball.

3. Healthy lifestyle: Cultivate children's healthy living habits, including a healthy diet, regular sleep and a good mental state.

4. Seek medical help: If parents can't effectively control their children's weight, please consult a doctor as soon as possible and seek appropriate treatment. Doctors may customize diet plans, medication, and even surgery.

Please note that the above suggestions should be made under the advice of doctors to avoid unnecessary risks.