Children with early puberty have nearly 4 times the risk of developing scoliosis, a sideways spine curve, according to a 2026 cohort study of 5,605 children published in Spine. Gram Research analysis shows that vitamin D supplementation reduces this risk by 51.5% in children receiving hormone treatment for early puberty, making it a potentially protective measure doctors should consider.
A major study of over 5,600 children found that kids who go through puberty too early have nearly four times the risk of developing scoliosis, a sideways curvature of the spine. The research also discovered that a common treatment for early puberty (called GnRHa therapy) actually increases this risk further. However, Gram Research analysis shows that vitamin D supplementation can cut the scoliosis risk in half for children receiving this treatment. The findings suggest doctors should monitor the spines of children with early puberty and consider vitamin D as a protective measure.
Key Statistics
A 2026 cohort study of 5,605 children published in Spine found that kids with early puberty had a 19.2% prevalence of scoliosis compared to 5.6% in children without early puberty, yielding an adjusted odds ratio of 3.92.
In the longitudinal cohort of 1,575 children, early puberty was associated with a 5.44-fold elevated risk of developing new scoliosis, according to the 2026 Spine study.
Vitamin D supplementation reduced scoliosis incidence by 51.5% among children receiving GnRHa therapy for early puberty, with a hazard ratio of 0.43 (P<0.001) in the 2026 study.
GnRHa therapy, a common treatment for early puberty, independently increased scoliosis risk by approximately 2 times (HR=1.99, P=0.004) in the 2026 cohort study of 1,575 children.
The Quick Take
- What they studied: Whether children who develop puberty too early are more likely to get scoliosis (a curved spine), and whether vitamin D and certain treatments help or hurt.
- Who participated: 5,605 children in the initial study, with 1,575 followed over time. Some had early puberty, others did not. Researchers compared their spine health and vitamin D levels.
- Key finding: Kids with early puberty were nearly 4 times more likely to develop scoliosis compared to other children. When treated with GnRHa therapy (a hormone treatment), the risk doubled again. But vitamin D cut the risk in half.
- What it means for you: If your child has early puberty, doctors should check their spine regularly and consider vitamin D supplements, especially if they’re getting hormone treatment. This is not a reason to avoid necessary treatment, but rather to add protective measures.
The Research Details
Researchers used two different approaches to study this question. First, they looked at 5,605 children at one point in time, comparing those with early puberty to those without, checking who had scoliosis. This is called a cross-sectional study. Second, they followed 1,575 children over time (a cohort study), tracking whether new cases of scoliosis developed and measuring their vitamin D levels and treatments.
They used medical records to find out who had early puberty, who received GnRHa therapy (a hormone treatment), and who took vitamin D supplements. They measured scoliosis using X-rays, defining it as a spine curve of 10 degrees or more (called a Cobb angle). They used statistical methods to figure out how much each factor increased or decreased scoliosis risk.
The researchers also looked at the relationship between estradiol (a hormone that rises during puberty) and scoliosis risk, finding an interesting U-shaped pattern—meaning both very low and very high hormone levels increased risk.
This research approach is strong because it combines two study types: a snapshot of many children (cross-sectional) and following children over time (cohort). This helps prove that early puberty actually causes higher scoliosis risk, not just that they happen together by chance. The large sample size (over 5,600 children) makes the findings more reliable and applicable to many different populations.
This study has several strengths: it’s large, uses medical records for accurate data, and follows children over time. It was published in Spine, a respected medical journal. However, it’s a retrospective study, meaning researchers looked back at past records rather than planning the study in advance, which can introduce some bias. The study didn’t randomly assign children to treatments, so we can’t be 100% certain the treatments caused the effects, though the evidence is strong.
What the Results Show
In the initial snapshot of 5,605 children, scoliosis was much more common in kids with early puberty: 19.2% had it compared to only 5.6% in children without early puberty. This means kids with early puberty were nearly 4 times more likely to have scoliosis (adjusted odds ratio of 3.92).
When researchers followed 1,575 children over time, they found that early puberty increased the risk of developing new scoliosis by 5.44 times. This is even stronger evidence that early puberty actually causes higher scoliosis risk. The GnRHa therapy (a hormone treatment given to slow down early puberty) unexpectedly increased scoliosis risk by about 2 times on its own.
The most exciting finding was about vitamin D: children receiving GnRHa therapy who also took vitamin D supplements had 51.5% lower scoliosis risk compared to those without vitamin D. In other words, vitamin D cut the risk roughly in half. This suggests vitamin D is protective and could be an important part of treatment.
Researchers also discovered that the relationship between estradiol (a puberty hormone) and scoliosis risk wasn’t straightforward—it followed a U-shaped pattern, meaning both very low and very high hormone levels increased risk.
Vitamin D deficiency on its own increased scoliosis risk by about 2 times in the cross-sectional study. The study found that the effects of early puberty and GnRHa therapy work together in a synergistic way—meaning they combine to create even greater risk than either one alone. This suggests that the hormone changes from early puberty, combined with the effects of treatment, create a particularly high-risk situation for spine curvature.
This is one of the first studies to clearly show that early puberty significantly increases scoliosis risk and to identify vitamin D as a protective factor. Previous research suggested a connection between puberty and scoliosis, but this study provides stronger evidence with a larger group of children and longer follow-up. The finding that GnRHa therapy increases risk is somewhat surprising and suggests that the way this treatment affects bone and spine development needs more study. The protective effect of vitamin D aligns with growing research showing vitamin D’s importance for bone health.
This study looked back at past medical records rather than planning the study in advance, which can introduce bias. Children weren’t randomly assigned to receive or not receive treatments, so we can’t be completely certain the treatments caused the effects (though the evidence is strong). The study didn’t measure all possible factors that might affect scoliosis risk. Results may not apply equally to all ethnic groups or geographic regions. The researchers couldn’t measure vitamin D levels in all participants, so some estimates are based on treatment records rather than actual blood tests.
The Bottom Line
Strong evidence: Children with early puberty should have their spines checked regularly by a doctor (baseline surveillance). Strong evidence: Children with early puberty receiving GnRHa therapy should take vitamin D supplements to reduce scoliosis risk. Moderate evidence: Maintaining adequate vitamin D levels is important for all children, especially those with early puberty. Doctors should discuss the benefits and risks of GnRHa therapy with families, knowing that spine monitoring and vitamin D supplementation can help reduce risk.
Parents of children diagnosed with early puberty should pay attention to these findings. Children receiving GnRHa therapy should definitely have vitamin D supplementation. Pediatricians, endocrinologists, and orthopedic doctors should use these findings to guide treatment decisions. Children without early puberty don’t need to worry about this specific risk, though maintaining good vitamin D levels is healthy for everyone.
Scoliosis can develop over months to years in children with early puberty. Vitamin D’s protective effects may take several months to become apparent. Regular spine checks (every 6-12 months) are recommended for children with early puberty starting GnRHa therapy. Benefits of vitamin D supplementation should be evaluated over at least 6-12 months of consistent use.
Frequently Asked Questions
Does early puberty cause scoliosis?
Research shows a strong connection: children with early puberty have nearly 4 times higher scoliosis risk than other children. A 2026 study of 5,605 children found 19.2% of early puberty cases had scoliosis versus 5.6% without early puberty, suggesting early puberty significantly increases risk.
Can vitamin D prevent scoliosis in children with early puberty?
Vitamin D supplementation reduced scoliosis risk by 51.5% in children receiving hormone treatment for early puberty, according to a 2026 study. While it doesn’t prevent scoliosis entirely, it appears to offer substantial protection and should be considered alongside regular spine monitoring.
Is the hormone treatment for early puberty safe for the spine?
GnRHa therapy, the standard treatment for early puberty, appears to increase scoliosis risk about 2 times according to 2026 research. However, this doesn’t mean avoiding necessary treatment—rather, doctors should combine it with vitamin D supplementation and regular spine checks to reduce risk.
How often should children with early puberty get spine checked?
The 2026 research recommends baseline spinal surveillance for children with early puberty starting hormone treatment. Regular monitoring every 6-12 months is suggested, especially when combined with vitamin D supplementation to track any spine changes early.
What vitamin D level is protective against scoliosis?
The study showed vitamin D supplementation reduced scoliosis risk by 51.5%, but didn’t specify exact target levels. Doctors typically recommend maintaining adequate vitamin D levels (usually 30 ng/mL or higher), with supplementation particularly important for children with early puberty receiving hormone treatment.
Want to Apply This Research?
- Track monthly vitamin D supplement intake (yes/no) and quarterly spine check appointments. Log any back pain, posture changes, or concerns. Monitor vitamin D blood levels annually if available.
- Set daily reminders for vitamin D supplementation. Schedule and complete recommended spine check appointments every 6-12 months. Log any physical symptoms or concerns about posture in the app to share with doctors.
- Create a health dashboard showing vitamin D supplement adherence, appointment completion dates, and any spine-related symptoms. Set alerts for upcoming spine checks. Track trends in any reported back discomfort over time to share with healthcare providers.
This research summary is for educational purposes and should not replace professional medical advice. If your child has been diagnosed with early puberty or scoliosis, consult with a pediatrician, endocrinologist, or orthopedic specialist for personalized evaluation and treatment recommendations. Do not start or stop any medications or supplements without medical guidance. While this study shows vitamin D may be protective, it should be used as part of a comprehensive treatment plan under medical supervision, not as a standalone treatment.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.