Does Weightlifting Make You Shorter?

Parents pull their kids from the weight room over it. Teens skip squats because a coach once told them it would “compress their spine.”

The fear that lifting weights stunts your growth refuses to die, despite decades of research saying otherwise.

So, does weightlifting make you shorter?

No. Weightlifting does not make you shorter. Not in kids, not in teens, not in adults. Full stop.

The American Academy of Pediatrics (AAP) stated in 2020 that resistance training has “no negative effect on physeal health or linear growth.”

A 2006 review by Malina covering 22 studies found zero evidence of height reduction in young athletes who trained with weights. Every major sports medicine organization agrees.

But where did this myth come from? And why does it stick around when the science is so clear?

We traced the claim back to its original source and broke down what actually happens to your spine, your bones, and your growth plates when you lift.

Where the Myth Came From

The myth traces back to a single misunderstood study from 1964.

Researchers in Japan observed that child laborers who performed heavy physical work had shorter stature than their peers.

The conclusion at the time was that heavy loading stunts growth. The problem?

These children were malnourished and overworked. Their stature deficit came from caloric deprivation and chronic stress, not from the mechanical act of lifting.

That nuance got lost as the finding spread through fitness culture. The headline “heavy work stunts growth” stuck. The context vanished.

Then there is the Olympic weightlifting argument. Watch any competition, and you will notice most top lifters are short. People assume the sport made them that way.

The real explanation is selection bias. Shorter limbs create better leverage for snatches and clean-and-jerks, so shorter athletes naturally rise to the top.

It is the same reason tall people dominate basketball. The sport selects for the body type, not the other way around.

Plenty of tall lifters compete too. Behdad Salimi Anoushiravani stands 6’4″. Bozhidar Cholakov is 6’6″. Neither one was “compressed” by the barbell. They were born tall and stayed tall.

The belief became so embedded in sports culture that researchers decided to test it directly.

A 2014 survey of 500 sports medicine experts rated the claim “children should avoid resistance training until physeal closure” as “very likely false.”

The expert consensus is clear. Does weightlifting make you shorter? This myth has no scientific legs to stand on.

What Science Actually Shows: Growth Plates, Bones, and Lifting

To understand why lifting does not stunt growth, you need to know how growth plates work.

Growth plates (physis) are zones of cartilage at the ends of long bones. They drive height increase during childhood and adolescence.

Each growth plate has layers of cells that multiply, mature, and eventually calcify into solid bone.

These plates do not close because of mechanical stress from barbells. They close when rising estrogen levels during puberty signal the cartilage to harden into bone.

That happens around ages 14-16 for girls and 16-19 for boys. It is a hormonal process, not a mechanical one. No amount of squatting can trigger that signal prematurely.

The research backing this up is extensive.

Malina’s 2006 systematic review analyzed 22 studies on youth resistance training. Not a single one found reduced height or growth plate damage.

The NSCA’s 2009 position statement reviewed 258 references and concluded there are “no justifiable safety reasons” to restrict youth from supervised resistance training.

The AAP’s 2020 guidance reinforced the same conclusion. Three independent reviews spanning decades, all reaching the same answer.

Lifting actually strengthens bones. Wolff’s Law states that bone tissue adapts to the loads placed on it. Resistance training increases bone mineral density, making the skeleton more resilient, not more fragile. Think of it like a callus forming on your hands from bar work. Your bones respond to stress by getting stronger.

Heavy compound lifts also stimulate growth hormone and IGF-1 release, both of which support healthy development during puberty.

If anything, the hormonal response to weightlifting supports growth rather than limiting it.

One critical distinction: natural weightlifting is not the same as using anabolic steroids. Steroids can cause premature growth plate closure because they elevate estrogen levels artificially.

That excess estrogen triggers the same closure signal that puberty does, just earlier than it should happen. That is a drug problem, not a lifting problem. A teenager doing supervised squats and deadlifts has nothing to worry about.

Temporary Spinal Compression: What Really Happens After a Heavy Squat

Heavy axial loading does cause temporary spinal compression. Squats, deadlifts, and overhead presses all compress the spine under load.

Research measured approximately 3.59mm of height loss after intense resistance training sessions. When someone measures themselves after a heavy squat session and finds they are slightly shorter, the panic starts. That reaction ignores the full picture.

Normal daily activity causes 3-12mm of height loss by evening. Just walking around, standing in line, and sitting at a desk compresses your spinal discs throughout the day.

Running 6km produces roughly the same compression as a weight training session. Basketball involves ground reaction forces of 5-7x bodyweight on every jump and landing.

That is far more impact than a controlled squat with 1-2x bodyweight on the bar. Squats, when performed correctly, are one of the best compound exercises you can do.

This compression reverses completely during sleep. When you lie down, your intervertebral discs rehydrate and expand.

The fluid that got squeezed out during the day gets pulled back in. You wake up taller than you went to bed. This is why people are measurably taller in the morning than at night.

It is a normal daily cycle that has nothing to do with permanent height loss. If temporary compression from exercise made people shorter, every runner, basketball player, and office worker would be shrinking year after year.

They are not. Does weightlifting make you shorter through compression? Only for a few hours, and no more than any other physical activity.

Can Weightlifting Actually Make You Taller?

A better question: is NOT lifting weights making you shorter?

Most adults lose 1-2 inches of visible height from poor posture alone. Forward head position, rounded shoulders, and thoracic kyphosis (upper back rounding) compress the spine and tilt the pelvis forward.

Years of desk work, phone scrolling, and avoiding the gym accelerate these problems.

Resistance training directly counters every one of these issues. Deadlifts and barbell rows strengthen the entire posterior chain, pulling your shoulders back into alignment.

Overhead presses build the shoulder stabilizers that prevent forward rounding. Core work supports a neutral spine position throughout the day. Face pulls and reverse flyes target the upper back muscles that most desk workers never train.

The combined effect is real and visible. People who start a consistent lifting program often report “growing” half an inch to a full inch within months. They did not grow. They just stopped slouching.

Similar to the question of whether jumping rope makes you taller, the answer comes down to posture and genetics, not the exercise itself. Your maximum height is roughly 80% genetics and 20% environment.

You cannot change the ceiling your DNA set for you. But you can stop leaving inches on the table by fixing posture that has been stealing your height for years.

Nobody asks whether sitting at a desk for 8 hours stunts your growth. They should. Prolonged sitting tightens your hip flexors, weakens your glutes, and rounds your upper back.

Over years, these imbalances compress your spine and pull you forward. A structured lifting program reverses all of it and does more for your standing height than almost any other activity you could choose.

FAQ

Do squats make you shorter?

No. Squats cause about 3.59mm of temporary spinal compression, roughly the same as running a few kilometers. Your discs fully rehydrate during sleep and you return to normal height by morning.

Normal daily activity compresses your spine even more (3-12mm by evening). There is zero evidence that squatting causes permanent height loss.

At what age is it safe to start lifting weights?

Children can begin supervised resistance training as early as age 7-8 according to both the AAP and NSCA. The focus at that age should be bodyweight exercises and light loads with strict attention to proper technique.

Injury risk from youth strength training is actually lower than most organized youth sports like football, basketball, or soccer when a qualified coach supervises form.

Are short Olympic weightlifters short because of lifting?

No. Shorter athletes have a biomechanical advantage in Olympic lifts because shorter limbs mean less distance to move the bar. This is selection bias. Tall Olympic lifters exist too, including medalists over 6’4″.

What actually stunts growth in teenagers?

Chronic malnutrition is the biggest factor. Hormonal disorders, severe sleep deprivation, and anabolic steroid use can also impair growth.

Certain medical conditions affecting the pituitary gland or thyroid play a role as well. Supervised resistance training is not on that list according to any major medical or sports science organization.