My Child Takes Supplements but Isn't Growing Taller. What Should We Look At?

What we often hear

• "They eat well, but it doesn't seem to go into height."
• "We give them supplements, but there's no visible difference."
• "I don't know what more to do for them."

My child takes supplements but isn't growing taller. What should we look at?

Before adding more to what your child eats, we look at whether the body is ready to grow. Two things, posture and sleep, are closely tied to growing.

Parents who come to us about height have usually already tried everything they can. They have steadily given supplements and health foods said to help, but seeing no noticeable change, they come in after even considering injections.

Can just fixing posture make a child look taller?

Sometimes hidden height comes out. When the back is rounded and the neck juts forward so the spine can't stretch straight, a child stands shorter than their real height.

An 11-year-old boy who came to our clinic looked about a head shorter than his classmates. He spent a lot of time on his phone and playing games, and when we looked at him standing, his shoulders were rolled inward and his neck stuck far forward.

A full-body image and posture analysis confirmed that his back was rounded and his neck pushed forward, so his spine couldn't extend straight up. In cases like this, just straightening posture leaves room for a difference of about 1–2 cm. But this isn't new height appearing; it's the folded-up part being revealed.

Does posture affect the growth plates too?

Bones need to be properly aligned for the stimulation from walking and running to reach the growth plates evenly. If the pelvis and spine are twisted, that stimulation is pushed to one side or scattered.

Considering how many times a child walks and runs each day, which direction that stimulation builds up in is no small matter. However, this is a pattern we've seen in the clinic, not data that proves in numbers how much more a child grew by fixing posture.

Why do you look at sleep too?

Because much of growing happens during sleep. If a child struggles to get up in the morning and often says they're tired during the day, we look at sleep quality first.

This boy also often said he was tired, more than is typical for his age, and had a hard time getting up in the morning. When posture is uncomfortable, a child tosses and turns trying to find a comfortable position in bed, and it becomes harder to sleep deeply. Posture and sleep aren't separate problems.

What are the limits of this judgment?

We can't tell you that fixing posture makes a child grow. Height that's revealed and height that's grown are different things.

To be clear: the 1–2 cm difference from straightening posture is the folded part unfolding. How much growth plate is left, how tall the parents are, and when puberty starts all have a far larger effect on height. If your child is much shorter than peers or their growth rate suddenly slows, it's better to get a separate growth evaluation. What we look at is the posture and sleep part of it.

Summary for parents

1. Before adding more to what they eat, we look at posture and sleep together.
2. If the back is rounded and the neck juts forward, a child stands shorter than their real height.
3. Straightening posture reveals the folded part. It doesn't create height that wasn't there.
4. Bones need to be properly aligned for stimulation to reach evenly when walking and running.
5. If your child is much shorter than peers, it's better to get a separate growth evaluation.

We start by checking where your child is right now. We don't rush you; we tell you, based on evidence, whether it's okay to wait or not.

If you're not sure whether to wait or act now, come see us. We'll check where your child is now, without rushing you.

Height depends heavily on the remaining growth period and inborn factors, so it differs from person to person.