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Why You Get Shorter as You Age: Spine Surgeon Dr. Nathan Lee Explains
Date posted: 8/31/2026
Last updated: 8/31/2026
Key Takeaways
Thinning discs are the main cause. Nathan J. Lee, MD, spine surgeon at Midwest Orthopaedics at Rush, explains that spinal discs lose water content with age, and small losses across more than 20 discs add up.
Compression fractures can go unnoticed. Dr. Lee notes they sometimes occur without a major injury, and multiple fractures cause substantial height loss and a rounded, kyphotic posture.
Osteoporosis raises the risk. Weakened bone density leaves vertebrae vulnerable to compressing or fracturing, which makes bone screening important with age.
Spinal deformity also shortens stature. Arthritis, degenerative scoliosis, and increasing forward curvature all change spinal alignment.
Sudden height loss warrants evaluation. So do new back pain, a rapid posture change, or a fracture after a minor fall.
Leg symptoms are a red flag. Dr. Lee advises that numbness, tingling, or weakness in the legs alongside height loss can signal spinal stenosis or nerve compression.
Lost height cannot be regained. Height lost to disc aging or a compression fracture cannot be exercised back, though posture related loss may improve.
Four habits protect your spine: calcium and vitamin D, weight-bearing exercise, strength and balance training, and osteoporosis screening.
Perfect posture is not the goal. Dr. Lee says changing positions regularly and keeping spinal support muscles strong matters more.
Table of Contents
That moment at your annual physical when the nurse reads your height out loud, and the number is not the one you have been telling people for years, is more common than you might think. Losing height is one of the most universal parts of aging, and most of the time it is nothing to worry about. Sometimes, though, it is your spine telling you something important.
Nathan J. Lee, MD, orthopedic spine surgeon at Midwest Orthopaedics at Rush and assistant professor of orthopedic surgery at Rush University Medical Center, was featured on MarthaStewart.com in a recent article titled "Why You Get Shorter as You Age and How to Slow It Down." As one of the expert sources for the piece, Dr. Lee broke down what is happening inside the spine, which changes are routine, and which ones deserve a call to your doctor.
Your discs lose water, and it adds up
Dr. Lee describes the discs between your vertebrae as the shock absorbers of the spine. As we age, those discs gradually lose water content and become thinner.
"Since we have discs throughout the spine, even a small amount of height loss at multiple levels can add up over time," Dr. Lee explained in the article. "This is one of the more normal reasons we become a little shorter with age."
Because there are more than 20 discs stacked from your neck to your low back, a millimeter here and a millimeter there eventually becomes a noticeable difference on the exam room measuring rod.
Compression fractures can happen quietly
Height loss becomes more meaningful when weakened bone is involved. Osteoporosis and osteopenia leave the vertebrae vulnerable to compression or fracture, and Dr. Lee notes that these fractures do not always announce themselves.
"Sometimes these fractures occur without a major injury and may even go unnoticed," Dr. Lee said. "Multiple compression fractures can lead to substantial loss of height and a more rounded or kyphotic posture."
That combination of shrinking height and a forward rounding of the upper back is one of the more visible signs that bone health deserves attention.
Arthritis and spinal deformity change your alignment
Age-related degeneration does more than thin the discs. It can also change the shape and alignment of the spine itself. Dr. Lee points to adult spinal deformity, including degenerative scoliosis and increasing forward curvature, as another reason patients find themselves standing shorter than they used to.
Learn more about scoliosis diagnosis and treatment at Midwest Orthopaedics at Rush.
When height loss is a reason to see a spine specialist
Gradual, slow loss of height is usually normal. New symptoms alongside it are not.
"New pain, numbness, tingling, or weakness in the legs along with height loss or worsening posture also deserves medical attention," Dr. Lee said, "as these symptoms can sometimes indicate spinal stenosis, nerve compression, or other degenerative changes in the spine."
A sudden change in height or posture, back pain that will not resolve, or a fracture after a minor fall are all worth raising with a physician.
What you can do to prevent height loss
Dr. Lee is direct about the limits. Height lost to normal disc aging cannot be restored, and height lost to a vertebral compression fracture is not something you can exercise your way back into. But he is equally clear that a great deal of preventable height loss is, in fact, preventable.
His recommendations for protecting spinal health:
- Get enough calcium and vitamin D to support bone density
- Do regular weight-bearing exercise such as walking, stair climbing, and dancing
- Add strength and balance training to support posture and reduce fall risk
- Get screened and treated for osteoporosis when appropriate
"My advice is fairly simple: Keep moving!" Dr. Lee said.
He also offers some welcome relief on the posture front. "You do not have to maintain perfect posture every minute of the day," he said. Changing positions regularly and keeping the muscles that support your spine strong will do more over time than any single perfect sitting position.
About Dr. Nathan J. Lee
Nathan J. Lee, MD, is a board-eligible orthopedic spine surgeon at Midwest Orthopaedics at Rush and an assistant professor of orthopedic surgery at Rush University Medical Center. He treats the full range of spinal conditions, including degenerative disc disease, spinal stenosis, scoliosis, and adult spinal deformity.
