If you’ve spent any time in a gym recently, you’ve probably heard someone say that lifting weights at a young age will stunt your growth. Some people act like it is common knowledge just because their parents have been telling it to them since a young age. The problem with this though is that the idea doesn’t line up with science.
Where the Fear Comes From
The main concern behind this myth involves something called growth plates. Growth plates are areas of cartilage near the ends of long bones that allow your body to grow taller during childhood and adolescence. Since they’re still developing, people assume they’re fragile and that heavy weights must somehow damage them.
But properly supervised weightlifting has not been shown to damage healthy growth plates. Most growth plate injuries in young athletes actually come from contact sports, or repetitive high impact movements not controlled resistance training in the gym. An unfortunately timed tackle in football or a bad landing in gymnastics is much more likely to cause injury than a supervised set of back squats with proper form.
How Growth Actually Works
Your height is mainly determined by genetics and hormones, especially growth hormone and the hormonal changes during puberty. Those biological processes aren’t turned off because you started bench pressing. Growth plates close when your body is finished growing, that timeline is controlled internally and can’t be affected by outside factors such as how much weight is on the bar.
In fact, resistance training can actually strengthen bones. When muscles pull on bones during lifting, they create stress that signals the body to adapt. Over time, bones become denser and stronger. That’s the opposite of stunting, it’s supporting.
The Bigger Picture
Weightlifting doesn’t just build muscle. It improves coordination, balance, joint stability, and confidence. It can reduce the risk of injuries in other sports by strengthening muscles and connective tissue. It also teaches discipline (my favorite benefit), you learn to track progress and stay consistent which is something that you can apply to many parts of your life outside the gym.
Lifting weights won’t make you shorter. But what it can do is make you stronger and more confident in your own body. The real key is learning how to train the right way.