Is it bad for a 12-year-old to lose weight?

Whether or not it is bad for a 12-year-old to lose weight depends on several factors, including the child's overall health, weight, and developmental stage. If a child is overweight or obese and a doctor recommends weight loss, it can be beneficial for the child's physical and mental health. In these cases, weight loss should be achieved under the supervision of a qualified healthcare professional such as a pediatrician or a Registered Dietitian. On the other hand, sudden or drastic weight loss in children who are already at a healthy weight can be detrimental to their growth and development.