There is nothing inherently damaging about weight training that would stunt the growth of a young person.
The basis of the claim was from the idea that the still active/open growth plates at the end of bones would be damaged by injury, preventing further growth. Indeed, injuries to the growth plates can stunt growth.
Dr. Rob Raponi, a naturopathic doctor and certified sports nutritionist, says the misconception that lifting weights stunts growth likely stems from the fact that injuries to growth plates in immature bones can stunt growth.
However, it is possible that poorly executed weight lifting could result in such an injury.
However, he points out that this is something that can result from poor form, weights that are too heavy, and a lack of supervision. But it’s not the result of lifting weights correctly.
What this myth doesn’t mention is that participation in almost any type of sport or recreational activity carries a risk of injury. In fact, about 15 to 30 percent of all childhood fractures involve the growth plates.
So, it can, but generally not if done correctly.
Healthline: Whydo people believe tha lifting weights stunts growth?