Key Takeaways
- Some height loss is common with ageing, but a noticeable or rapid change may point to muscle loss, osteoporosis, spinal fractures, disc degeneration or spinal deformity.
- Vertebral compression fractures can reduce spinal height and may occur with little or no obvious injury, especially in people with osteoporosis.
- Seek medical advice if shrinking height is accompanied by back pain, a stooped posture, weakness, numbness, poor balance, or difficulty standing upright.
- Treatment depends on the cause and may include physical therapy, bone-strengthening treatment, bracing, or surgery.
Introduction
Have you been feeling shorter lately, or noticed that you are no longer looking as tall as you once were in photographs? While some height loss is expected with age, it should not always be dismissed as a normal part of getting older. In some cases, a more significant loss of height may be caused by spine-related or medical issues.
Below, we explore some common reasons behind your shrinking height, when it may be a cause for concern, and what you can do about it.
What Are Some Possible Causes of Shrinking Height?
1. Age-Related Shrinkage
Most people tend to lose some height around age 50, with the decline often accelerating in later decades. In fact, studies indicate that on average, individuals may experience a 2cm to 4cm reduction in height over the course of their life1. This is often caused by declining muscle mass and bone density.
2. Sarcopenia (Muscle Loss)
Sarcopenia is the age-related loss of muscle mass and strength. When the core and back muscles weaken, it becomes harder to keep the spine upright. This may cause a stooped posture, reduced balance, and faster fatigue when standing or walking.
3. Osteoporosis and Vertebral Fractures
Osteoporosis weakens the bones and increases the risk of vertebral compression fractures, where part of a vertebra collapses and reduces spinal height. Over time, one or more of these fractures can lead to noticeable height loss. In one study, people with a vertebral fracture had, on average, 0.54 inches more height loss than those without a fracture2.
4. Spinal Deformities
Spinal deformities in adults, such as kyphosis and scoliosis, may also reduce standing height by changing the natural alignment of the spine3. Kyphosis causes excessive forward rounding, while scoliosis causes a sideways curve. In more severe cases, these conditions may also lead to pain, muscle fatigue, poor balance, or difficulty standing upright.
5. Spinal Disc Dehydration
Spinal discs sit between the vertebrae and act as shock absorbers. Their high water content helps them stay flexible and maintain their height. During the day, pressure from standing, sitting and movement causes the discs to lose some fluid, which they partly regain during rest. This is why some individuals may be slightly taller in the morning.
With ageing or disc degeneration, the discs may retain less water and become permanently thinner. Across several levels, this can contribute to gradual height loss, stiffness, or reduced flexibility.
When Should You Be Concerned About Shrinking Height?
Shrinking height should be assessed when it is noticeable, progressive, or occurs over a short period.
See a doctor if it is accompanied by:
- Persistent or sudden back pain
- A more stooped posture
- Difficulty standing upright
- Reduced balance or frequent falls
- Numbness, tingling or weakness
- Pain spreading into an arm or leg
- A history of osteoporosis
- A recent fall or spinal injury
Your doctor may use X-rays to check for fractures, disc narrowing, or deformity. MRI or CT scans may be needed if spinal stenosis, nerve compression or spinal cord deformation is suspected. A bone-density scan may also be recommended.
Seek prompt medical attention if you develop worsening weakness, poor coordination, or changes in bladder or bowel control.
What You Can Do About Spine-Related Height Loss
Treatment depends on whether shrinking height is caused by a vertebral fracture, spinal deformity, or another underlying condition. Lost height cannot always be restored, but treatment may help reduce pain, prevent further progression, and preserve mobility.
For a Vertebral Fracture
The approach may differ slightly depending on the location and the severity of the fracture. If it is stable, then the fracture may be managed with conservative methods, such as pain medication, short-term bracing, activity modification, and physical therapy.
If osteoporosis is a contributing factor, your doctor may also recommend bone-strengthening medication along with calcium and vitamin D assessments. Fall-prevention measures may be advised to reduce the risk of further injury.
If pain persists or the fracture causes ongoing instability, stabilisation surgery may be recommended. For example, a lumbar spine fracture may be treated with minimally invasive procedures such as vertebroplasty or kyphoplasty. These procedures stabilise the fractured vertebra by injecting medical bone cement, helping to support the bone while minimising disruption to the surrounding muscles and soft tissues.
In more complex or unstable fractures, spinal instrumentation with screws and rods may be needed to restore stability.
If Height Loss Is Caused by a Spinal Deformity
In adults, mild spinal deformities may be managed with physical therapy, posture training, strength exercises and regular monitoring. These can help improve balance, reduce muscle fatigue, and help you remain more upright, although they may not reverse an established curve.
If the deformity continues to progress, causes persistent pain or compresses nearby nerves, surgery may be considered. For example, if a spinal deformity leads to nerve compression, minimally invasive or endoscopic decompression surgery may be performed to relieve pressure on the affected nerves while minimising tissue disruption.
When the main concern is worsening alignment, curve progression or loss of spinal stability, corrective spinal fusion surgery with rods and screws may be recommended. Your doctor will consider your symptoms, imaging findings, and overall spinal balance before recommending the most appropriate approach.
Conclusion
Shrinking height may be a natural part of ageing, but a noticeable or rapid change can sometimes point to problems involving the bones or spine. Pay attention to how quickly it develops and whether it is accompanied by pain, a stooped posture, poor balance or reduced mobility.
At Achieve Spine And Orthopaedic Centre, our doctors assess the possible cause of height loss and recommend treatment based on the condition involved. Where surgery is appropriate, we may recommend endoscopic spine procedures and selected day surgeries to help limit tissue disruption and support an earlier return to daily activities. Visit our website today to learn more about our approach and services.
References:
1. Fernihough, A., & McGovern, M. E. (2015). Physical stature decline and the health status of the elderly population in England. Economics and human biology, 16, 30–44. https://doi.org/10.1016/j.ehb.2013.12.010
2. Xu, W., Perera, S., Medich, D., Fiorito, G., Wagner, J., Berger, L. K., & Greenspan, S. L. (2011). Height loss, vertebral fractures, and the misclassification of osteoporosis. Bone, 48(2), 307–311. https://doi.org/10.1016/j.bone.2010.09.027
3. Shimizu, M., Kobayashi, T., Chiba, H., Senoo, I., Ito, H., Matsukura, K., & Saito, S. (2020). Adult spinal deformity and its relationship with height loss: a 34-year longitudinal cohort study. BMC musculoskeletal disorders, 21(1), 422. https://doi.org/10.1186/s12891-020-03464-2
