青少年应定期体检，监测身高体重等生长发育指标，及早发现、科学判断是否出现超重和肥胖问题，以便及时采取干预措施。
The adolescents should take the periodic physical examination to monitor the growth and development index, such as height and weight, so that the problems of overweight and obesity could be discovered early and determined scientifically to take intervention measures in time.