By Phillip Maletta, DC
Last Updated: August 10, 2026

Here’s the short version: A backpack over roughly 10–15% of your child’s body weight, or worn slung over one shoulder, can genuinely make them sore — use both straps, pack the heaviest items closest to the back, and lighten the load. What a heavy backpack does not do is cause scoliosis; that’s the consensus of the country’s pediatric and orthopedic authorities, and we’ll show you the evidence. But here’s what deserves more attention, not less: back pain itself is common in kids and teens, and research following thousands of adolescents into adulthood shows that back pain that starts early is far more likely to become back pain for life. The good news runs the other way too — young spines respond fast to conservative care. Take the pain seriously; don’t fear the backpack.

Those are the three questions parents actually ask us every August: Is the bag too heavy? Is it causing scoliosis? And what do I do about the pain itself? Here’s the fuller, honest picture — each part ends with what to actually do.

Part 1: The Backpack

How Heavy Is Too Heavy for a School Backpack?

The American Academy of Pediatrics (AAP), the professional organization of pediatricians whose guidance most schools and pediatric offices follow, puts the ceiling at 15% of a child’s body weight (HealthyChildren.org); Cleveland Clinic pediatric specialists recommend staying a bit more conservative, at 10–15% (Cleveland Clinic), and the American Chiropractic Association leaner still, at about 10% (ACA / Hands Down Better). Our take is younger kids, and any child with a history of back or neck complaints, do best near the low end.

In real pounds:

Textbooks, a laptop, water bottle, and lunch add up fast. So, if you’re wondering if your kids bag is too heavy, it’s worth weighing the loaded bag on a bathroom scale once at the start of the year.

The Right Way to Wear It

Both straps, every time. Single-shoulder carrying shifts the load unevenly, forcing the spine and shoulder muscles to compensate on one side. Yes, it’s a real fight — by middle school, plenty of kids insist everyone carries one-shouldered and two straps look uncool. It’s still the single most avoidable contributor to the leaning and shoulder strain we see, and it’s worth winning.

Heaviest items closest to the back. Textbooks and the laptop belong in the compartment nearest your child’s spine. That keeps the pack’s weight close to their body instead of pulling them backward.

Straps snug, pack at waist level and not loose and sagging toward the hips. If the bag has a waist strap, use it. Waist straps shift load off the shoulders and onto the hips which is a stronger place to carry weight.

Rolling backpacks? Sometimes these are the answer, but in our Holland chiropractic clinic, we don’t recommend them often. Some schools don’t allow them because they struggle on stairs, clog hallways, and become a trip hazard. While they are genuinely useful for a child who can’t comfortably carry weight for a stretch, such as during injury recovery, a long walk home or if the child must carry more than 15% of their body weight in the bag. For most kids, a properly loaded two-strap pack works better day to day.

Signs the Backpack Is Too Heavy

• Leaning forward noticeably, or arching backward to compensate
• Red marks or indentations on the shoulders from the straps
• Struggling to put it on or take it off without help
• Numbness or tingling in the arms or hands — mention this to your chiropractor or pediatrician
• Back, neck, or shoulder pain, especially during or right after wearing it

That last one is also the practical tell: pain that shows up during or right after wearing the backpack, and eases once it’s off, points to the backpack as the cause. Fix the weight and the fit, and it usually resolves. Pain that hangs around after the backpack load is corrected or removed is a different story. If your kid has this, skip to Part 3.

Part 2: The Scoliosis Question

Does a Heavy Backpack Cause Scoliosis?

No. And that’s not just us saying it. For this we can defer to the American Academy of Orthopaedic Surgeons: “Sports activities and heavy backpacks do not cause scoliosis or make a curve worse.” The Scoliosis Research Society lists it out: scoliosis “does not come from carrying a heavy book bag or other heavy things, athletic involvement, poor sleeping or standing postures, lack of calcium, or minor leg length difference.” The American Academy of Pediatrics agrees — backpacks “have not been shown to cause scoliosis or long-term problems.”

Here’s why that holds up. Scoliosis isn’t just a spine that leans. To meet the definition, the curve has to measure at least 10 degrees and the vertebrae themselves have to be rotated — a fixed (stuck vertebra) structural twist, not a temporary position a body is holding. A heavy pack changes how your kid stands and that’s compensatory. It isn’t the same thing as a rotated, structural curve.

In a study published in Spine, researchers took standing MRIs of eight healthy children around age 11 — kids without scoliosis or a back condition — four times each: once with no backpack, then wearing school backpacks loaded to 4, 8, and 12 kilograms (about 9, 18, and 26 pounds — which worked out to roughly 10%, 20%, and 30% of body weight for these kids). As the packs got heavier, the discs of the lower back measurably compressed, and the children reported more back pain at every load tested (Neuschwander et al., Spine, 2010).

Here’s the finding that sounds alarming until you understand it. The researchers also measured each child’s lumbar spine for sideways curvature on the MRI — the same Cobb-angle measurement used to diagnose scoliosis. Standing with no backpack, these kids averaged about 2 degrees: essentially straight. Under load, their spines leaned — and four of the eight measured past the 10-degree mark, the number that defines scoliosis, while wearing the 18-pound pack. So did a backpack just give half of them scoliosis? No, and the definition is exactly why. Scoliosis is a fixed curve with rotated vertebrae; this was a temporary sideways lean, photographed while the weight was pressing on them, in spines that measure straight without it. And here’s an interesting detail: the lean didn’t follow the weight. It peaked at the 18-pound pack and was smaller at 26 pounds — if the weight itself were bending these spines into curves, more weight should have meant more bend. So, do heavy packs make kids sore? Yes, they certainly can. Do they cause scoliosis? No, not with normal use at least.

What Actually Causes Scoliosis — and How Common Is It, Really?

In more than 80% of cases, no cause is ever identified — that’s what “idiopathic” means. The known minority trace to how vertebrae formed before birth, to neuromuscular conditions, or to genetic syndromes. Nothing on that list is something a child carried in a backpack, did on a field, or sat through in a classroom. Genetics clearly plays a role: about 30% of adolescents with idiopathic scoliosis have a family history of it.

It’s also rarer and milder than parents think. About 1% to 3% of U.S. kids aged 10 to 16 have a curve of 10 degrees or more at all. Among curves that are found, roughly 87% sit in the mild 10-to-19-degree range and under 1% reach 40 degrees. UCLA pediatric specialists put it plainly: fewer than 10% of kids who have scoliosis require any bracing or surgery. Surgery generally isn’t considered below 45 to 50 degrees.

Now, when it comes to the difference in rates amongst boys and girls, these numbers get interesting. At the slightest curves (the ones too small to even meet the definition of scoliosis) boys and girls turn up in almost equal numbers. At the 10-degree mark where scoliosis actually begins, girls outnumber boys roughly two to one. And girls are about five times more likely to have a curve of 20 degrees or more, and roughly ten times more likely to progress to 30 degrees or more. Reviewing the research, there isn’t a consensus answer for why scoliosis shows up more in adolescent girls than boys. When we answer the question in the office, we don’t like to just chalk it up to genetics (although that’s a legitimate reason), so here’s one explanation: adolescent girls hit their growth spurt before boys do, and during that spurt the vertebral bodies themselves — the front column of the spine — can grow slightly faster than the bony arches behind them. This can flatten the normal rounding of the upper back, and a flattened spine is less stable against twisting, so it becomes easier for it to rotate and then drift sideways. This idea is called relative anterior spinal overgrowth (RASO). Now, once a curve is present, it can be amplified further by growth during growth spurts according to the Hueter-Volkmann progression mechanism. These reasons are educated guesses, but not settled facts.

How to Check Your Child’s Back at Home (30 Seconds, Twice a Year)

Many schools no longer screen for scoliosis routinely, which quietly makes parents the first line of detection. Back-to-school time is a natural moment to look, so here are two quick checks that can be done at home:

1. Standing look. From behind, with their shirt off or snug: are the shoulders level? Do the shoulder blades stick out evenly? Is the waistline even, with the same gap between each arm and the body? Does the head center over the hips?
2. The forward bend. Have them bend forward at the waist, arms hanging loose (this is the same Adams forward bend test used in screenings). Look along the back from behind: does one side of the rib cage or lower back sit higher than the other?

A home check isn’t a diagnosis — but it’s exactly the right trigger to get a real exam. Chiropractors are portal-of-entry providers, which means you don’t need a referral: you can bring anything uneven straight to us, or to your pediatrician, whichever you reach first.

What Happens If We Suspect a Curve

Here’s exactly how it works in our office, because parents deserve to know before they book. An adolescent’s first visit starts the way every patient’s does: a history, then a physical exam. If the exam raises suspicion of scoliosis, we take a standing X-ray in-office and measure the Cobb angle and the Risser stage — the same measurements every scoliosis decision in medicine is based on. Only after we know what we’re working with do we treat. No one gets adjusted on a hunch.

What happens next depends on what the X-ray shows. Chiropractic care cannot cure, correct or straighten a structural curve. While manual therapies such as chiropractic, standard physical therapy and massage can help with pain relief in scoliosis, none of them has ever been shown in a controlled study to correct a curve. Curve management is a monitoring and growth question that belongs with your pediatrician and, for larger or progressing curves, an orthopedic specialist. In our office, we readily refer and in unresponsive or severe cases we’ll be the ones suggesting the orthopedic opinion.

We also work alongside physical therapists, and here’s an option most families have never heard of. Scoliosis-specific exercise programs, the best known is the Schroth method, address three-dimensional postural correction and specialized breathing, and they’re delivered by physical therapists with dedicated certification. They’re the only exercise approach for scoliosis with randomized-trial support behind them. The effects are genuine but modest, and they don’t replace monitoring, a brace when one is warranted, or a surgical opinion for a large curve. West Michigan is fortunate here: certified therapists practice in Holland, Grand Haven, and Grand Rapids, and if your child would benefit we’ll help you find one.

What we keep doing throughout is the thing chiropractic does well: managing the musculoskeletal pain that can come with a curve, as a minimally invasive option so your child stays comfortable and active.

Part 3: The Part That Deserves More Attention — the Pain Itself

Kids’ Back Pain Is Common — and It’s Not “Just Growing Pains”

A meta-analysis of 59 studies covering more than 125,000 children found that about one in three adolescents reports low back pain in a given year, and roughly four in ten have had it at some point, and these rates climb steadily through the teen years. By adolescence, musculoskeletal pain rates approach adult levels — and in up to a quarter of cases, the pain interferes with school or physical activity. In our opinion, this is not a fringe complaint, and it deserves better than rubbing some dirt on the pain.

Most back pain we see in adults is musculoskeletal in origin and that’s consistent with what we see in children and adolescents too. Adolescents are 10–15% of the patients in our office, most of them athletes, and the encouraging part is how fast young patients respond to care once the cause is identified. In our experience, a problem that might take an adult three or four weeks to settle often takes an adolescent about half that.

Why Early Back Pain Is Worth Treating Early

This is the message we’d tell every parent if we could, and we’ll let the research say it. A landmark study in Spine followed 9,600 twins for eight years, from adolescence into adulthood. Adolescents with low back pain were far more likely to have low back pain as adults — odds ratios as high as four — and it ran dose-response: of the teens who’d had back pain on more than 30 days in a year, 26% were still having that much pain as adults, versus 9% of everyone else. The authors’ own conclusion: the findings “should lead to a change in focus from the adult to the young population in relation to research, prevention, and treatment.”

In plain English, back pain that starts early in life sticks around longer. And we see it in our office every week. The longer pain is around in adolescence, the better its odds of following a child into adulthood. That’s exactly why “they’re young, they’ll walk it off” is the one piece of conventional wisdom we push back on — not with fear, but with the flip side of the same evidence: young spines and young habits are the most changeable ones. In kids, back pain is easily treatable now, but harder to treat later.

And to circle back to the backpack, it may be hard to believe, but a systematic review of 69 studies found no convincing evidence that schoolbag weight, design, or carrying method increases the risk of developing back pain (Yamato et al., Br J Sports Med, 2018). So, yes, a backpack can make your kid sore this week (the MRI study by Neuschwander mentioned above shows why) and it can exacerbate existing pain, but it probably isn’t going to cause long-term back pain. The pain that’s already there, whatever started it, is what deserves the attention.

The Teen Athlete: When “Just a Pulled Muscle” Isn’t

One group gets a special rule and it’s worth mentioning while talking about pediatric back pain because it can be missed and mistreated if not identified. In young athletes whose low back pain persists and is made worse in spinal extension, the cause often isn’t a muscle or a stuck vertebra at all. In a study of 100 adolescent athletes referred to a sports-medicine clinic for back pain, 47% turned out to have spondylolysis — a stress fracture of the spine — versus 5% of adults with back pain. These stress injuries are tied to adolescent growth spurts and sports that repeatedly twist and hyperextend the spine — gymnastics, volleyball, diving, football; throwing sports and rowing load the spine the same way.

Because of that, our office (as all chiropractors are trained) is vigilant in the persistent teen-athlete case, and our protocol is:

• We always image when spondylolysis or spondylolisthesis (a slipped vertebra) is on the table — that’s a diagnosis we confirm with imaging, not guess at.
• We adapt the care: no extension-loaded lumbar adjustments over a suspected stress injury, and flexion-based exercise comes in early.
• We build the hand-off in: during the initial care plan, we highly recommend lining up a physical therapist to take the rehab further. Once we get you out of pain, the rehab will keep that relief stable.
• We escalate: if pain isn’t responding within 2–4 weeks, we refer for an MRI.

If your athlete’s back pain has hung around for weeks — especially in a sport that arches the back — bring them in for a real evaluation, or raise it with your pediatrician. Either door works. Don’t let it ride the bench with them.

The Slouch That Isn’t a Slouch

One more thing parents mistake for laziness: a rounded upper back that won’t straighten. Ordinary postural slouching corrects the moment a kid stands up tall, and it’s rarely painful. Scheuermann’s hyperkyphosis is a structural condition of the mid-back that shows up in adolescence and is a common cause of mid-back pain. It produces a curve that is sharp, stiff, and rigid — it stays rounded no matter how the child stands or lies. The home test is simple: ask them to stand up straight. If the roundness corrects, it’s posture. If it doesn’t, have it examined. This is another one you can bring directly to us.

When Back Pain Needs a Physician Promptly

Most back pain in kids settles quickly once the cause is addressed. This short list does not wait for conservative care. See a chiropractor if a child’s back pain lasts more than several days or progressively worsens, but see the pediatrician or emergency room promptly, at any age, if the pain comes with any of these:

• Fever or weight loss
• Weakness or numbness
• Trouble walking
• Pain that radiates down one or both legs
• Bowel or bladder problems
• Pain that keeps them from sleeping — night pain that wakes a child is taken seriously
• A child 4 years old or younger with back pain at all

Everything on that list is uncommon, and all of it belongs in front of a pediatrician first — that’s true whether your child’s care started with us, with their pediatrician, or nowhere yet.

What Care Looks Like in Our Office

You don’t need a referral to see a chiropractor — we’re portal-of-entry providers, and for a lot of Holland-area families we’re the first call when a kid’s back starts complaining. We’ve spent decades treating back pain in patients of all ages, with X-ray on-site, and adolescents are a regular part of every week here. Here’s what that first visit involves: a real history, a physical exam, imaging only when the exam calls for it (in-office X-ray, including Cobb-angle measurement when a curve is suspected), and treatment only once we know what we’re treating. For adolescents, care is gentle and age-appropriate — conservative, minimally invasive management of muscle-and-joint pain, the same approach we take with back pain and neck pain at every age, plus practical coaching on packs, posture, and training loads. And when a case needs a physical therapist, an orthopedist, or the pediatrician’s oversight, we’re the ones who say so and set it up.

Frequently Asked Questions

How heavy is too heavy for a child’s backpack?

Most pediatric guidelines cap it at 10–15% of your child’s body weight — roughly 8–12 pounds for an 80-pound child. Stay closer to 10% for younger kids or any child with a history of back or neck complaints, and weigh the loaded bag once on a bathroom scale at the start of the year.

Does a heavy backpack cause scoliosis?

No. The American Academy of Orthopaedic Surgeons, the Scoliosis Research Society, and the American Academy of Pediatrics all state that backpacks do not cause scoliosis. Scoliosis is a structural curve with rotated vertebrae — different from the temporary posture changes a heavy pack causes, which usually resolve once the load is corrected.

What causes scoliosis in children?

In more than 80% of cases, no cause is ever found — that’s why it’s called idiopathic scoliosis. The known minority trace to vertebrae that formed differently before birth, neuromuscular conditions, or genetic syndromes. It is not caused by backpacks, sports, posture, or anything a child did.

What are the signs of scoliosis in children?

From behind: uneven shoulders, one shoulder blade sticking out more than the other, an uneven waistline, or the body leaning slightly to one side. On a forward bend with arms hanging, one side of the rib cage or lower back sitting higher than the other. Any of these warrants a real exam — with us or with your pediatrician.

How do I check my child for scoliosis at home?

Two quick looks: standing (are shoulders, shoulder blades, and waistline even?) and bending forward at the waist with arms hanging (does one side of the back sit higher?). A home check isn’t a diagnosis. If anything looks uneven, book an exam — as portal-of-entry providers we can examine, X-ray, and measure the curve in-office, and we coordinate with your pediatrician from there.

Does scoliosis run in families?

Often. About 30% of adolescents with idiopathic scoliosis have a family history of it, and having a parent or sibling with scoliosis raises a child’s likelihood. If it runs in your family, mention it at exams and well visits so screening happens with that in mind.

Is scoliosis more common in girls?

The difference widens as the scoliosis curve gets bigger. Among the slightest curves — too small to even count as scoliosis — boys and girls are affected almost equally. At the 10-degree threshold where scoliosis begins, girls outnumber boys about two to one. And girls are about five times more likely to have a curve of 20 degrees or more, and roughly ten times more likely to progress to 30 degrees or more. Researchers haven’t settled why; growth timing and genetics are the leading ideas.

Will my child need a brace or surgery for scoliosis?

Probably not, even with a diagnosis. Fewer than 10% of kids with scoliosis need any bracing or surgery — most small curves are simply rechecked as the child grows. Bracing is used for larger curves in growing kids, and surgery generally isn’t considered below 45 to 50 degrees — and among curves that are found, fewer than 1% even measure 40 degrees or more. Those decisions belong with your pediatrician and, when needed, a pediatric orthopedist.

Can a chiropractor fix scoliosis?

No. Chiropractic care does not correct, reverse, or stop a structural curve. The correct answer is that curve management belongs with your pediatrician and, when needed, a pediatric orthopedist through observation, bracing, and rarely surgery. Be cautious of any clinic — of any profession — promising to reduce a curve with a proprietary program; the treatments with the strongest evidence are bracing when it’s warranted and scoliosis-specific exercise therapy such as the Schroth method, delivered by certified physical therapists. What chiropractic care can offer a child with scoliosis is what it does well everywhere else: minimally invasive management of muscle and joint pain and function — working alongside the pediatrician monitoring the curve.

Can I take my child straight to a chiropractor for back pain?

Yes. Chiropractors are portal-of-entry providers, so no referral is needed. A first visit for an adolescent means a history, a physical exam, imaging only if the exam calls for it, and screening for the warning signs that need a physician instead — and if that’s what we find, arranging it is part of the visit.

When should I worry about my child’s back pain?

See a doctor if it lasts more than several days or keeps worsening — and promptly at any age if it comes with fever or weight loss, weakness or numbness, trouble walking, pain shooting down a leg, bowel or bladder changes, night pain that wakes them, or if the child is 4 or younger. Most kids’ back pain has none of these — but even “ordinary” pain that keeps recurring is worth treating: research shows adolescent back pain raises the odds of adult back pain severalfold.

How can I tell if it’s the backpack or growing pains?

Pain during or right after wearing the backpack, easing once it’s off, points to the backpack. Pain that comes and goes at random, unrelated to backpack use, is more consistent with growing pains. Pain that’s persistent either way — especially in an athlete whose sport arches the back — deserves an exam rather than a wait.

The Bottom Line

Lighten the bag, insist on both straps, and stop worrying that it’s building a curve — it isn’t, and the evidence is unanimous. Spend that worry where it pays: glance at your kid’s back twice a year, know the short list of red flags, and take recurring back pain seriously now, while it’s at its most treatable — because the research is clear that teen back pain left alone has a way of becoming adult back pain.

If your child’s back has been complaining, you don’t need a referral and you don’t need to wait. Call us at 616-392-7031, or book online — we’ll figure out what’s actually going on, treat what we should, and route anything that belongs elsewhere. McAlpine Chiropractic, 500 West 17th Street, Holland, MI 49423.

Written and medically reviewed by Phillip Maletta, DC, McAlpine Chiropractic — Holland, MI.