There are a lot of products marketed around “growth,” and I understand why parents notice them. We all want our children to grow and thrive.
But let me start with something important:
If taking extra vitamins automatically made children taller, pediatricians would have figured out how to grow a generation of giants by now.
Growth is more interesting—and more complicated—than that.
This one is personal for me. In our house, height comes up more than you might think. My daughter wishes she were taller. My two lacrosse boys have Olympic dreams, and both track toward the lower end of the growth curve. As their mom, I feel that pull. As their pediatrician-mom, I also know what the growth chart can and cannot be changed by. Their curves are steady and healthy, and that is exactly what I’d want to see in any child in my practice.
Height is strongly influenced by genetics
Height is a complex trait influenced heavily by genetics. MedlinePlus notes that inherited DNA differences account for a large portion of variation in height.
Pediatricians also look at parental height, family growth patterns, puberty timing, and the child’s own growth curve. Two healthy children can be very different heights and both be growing exactly as expected.
Growth is about the pattern, not winning a percentile
I wish more parents knew this: the 90th percentile is not “better” than the 20th percentile.
What matters is whether a child is growing consistently along an appropriate curve for them.
A child who has always tracked around the 20th percentile may be growing beautifully. A child who suddenly drops across percentiles may deserve a closer look, even if that child is still taller than many classmates.
Nutrition still matters
Genetics does not mean nutrition is irrelevant. Children need enough calories, protein, vitamins, minerals, and overall dietary quality to support normal growth and development.
Inadequate nutrition and true nutrient deficiencies can interfere with normal growth. Correcting those problems matters.
But that is very different from saying that giving extra vitamins to an already well-nourished child will push them beyond their expected genetic height.
Calories matter more than many parents realize
Growth conversations often become overly focused on vitamins and minerals. But a child also needs enough total energy.
A child who is not eating enough overall will not solve that problem with a high-dose multivitamin. This is particularly relevant for highly active children, children with small appetites, and children who eat a very narrow range of foods.
Healthy food is important. Enough food is important too.
Protein matters—but it is not a height supplement
Protein provides building blocks for growth and tissue repair. Children need enough of it.
But “more protein” does not equal “more height.” Once needs are met, adding large amounts of extra protein is not a way to override genetics.
I think this is especially important in the youth sports world, where protein products can start to feel like performance requirements. Most children can meet their needs through ordinary food when they are eating enough overall.
Sleep belongs in the growth conversation
Sleep is part of normal growth and development too. Children and adolescents need adequate sleep for many reasons, including physical recovery, learning, mood, and normal hormonal rhythms.
Again, there is no magic bedtime supplement that replaces enough sleep opportunity.
When I investigate growth
If growth is slower than expected, I think broadly. Nutrition is one piece, but so are thyroid function, growth hormone, celiac disease, chronic illness, puberty timing, medications, sleep, and genetics.
This is why I am cautious with any product that implies it can “make kids taller.” A supplement cannot diagnose the reason a child is not growing normally.
One measurement is not the story
A single height measurement is a snapshot. Pediatricians care about growth velocity—how a child is growing over time.
That is why regular well visits matter. A growth chart becomes much more useful when there are multiple accurate measurements across months and years.
Where nutrition support fits
My goal is not to manufacture extra inches. My goal is to make sure a child has the nutritional building blocks needed for normal growth and development, alongside sleep, activity, medical care, and a healthy diet.
If a child has a genuine nutritional gap, correcting it matters. If a child is already meeting nutritional needs, “more” does not become a growth strategy.
What I tell parents
I understand why growth can become emotional. Parents compare siblings. Kids compare themselves with teammates. Adolescents worry about height. It is easy for marketing to step into that anxiety.
I would rather bring the conversation back to what we can actually support: adequate food, protein, micronutrients, sleep, activity, and appropriate medical evaluation when growth does not follow the expected pattern.
My bottom line
Good nutrition can support normal growth. It cannot rewrite genetics.
That may not be the flashiest marketing message, but I think it is the honest one.
— Dr. Katie Good, MD
Sources & further reading
- MedlinePlus Genetics: Is height determined by genetics?
- American Academy of Pediatrics: Predicting adult height and factors affecting growth
This article is for general education and is not a substitute for individualized medical advice. If you have questions about your child’s nutrition, supplements, growth, medications, or laboratory results, talk with your child’s pediatrician or healthcare professional.