Smoking has nothing to do with my back or spine
He smoked a pack a day and had done for 20 years. He came to me for his back pain. When I mentioned his smoking as a contributing factor, he looked genuinely confused. 'My lungs and my back are separate problems,' he said. They weren't. And when I explained why, the connection surprised him completely.
What Patients SayI know smoking is bad for my lungs and heart. But surely it has nothing to do with my back pain or spine problems? Those are completely separate.
Where Did This Come From?
The connection between smoking and lung or cardiovascular disease is well-publicised. The connection between smoking and spinal health is far less well known — even among patients who are fully aware of smoking's other harms. Because the mechanism is indirect and the relationship isn't widely taught, most smokers have never been told about it.
This knowledge gap has consequences. Smoking is one of the most significant modifiable risk factors for disc degeneration, post-surgical complications, and spinal fusion failure — and most smokers with back problems have no idea.
What the Science Actually Says
The mechanism is vascular. Intervertebral discs are avascular — they have no direct blood supply — and rely on diffusion through the vertebral end-plates to receive nutrients and remove waste products. Smoking accelerates atherosclerotic changes in the small vessels that supply the end-plates, reducing this diffusion. The result: discs in smokers receive less nutrition, accumulate more metabolic waste, and degenerate faster.
The evidence is substantial. A large meta-analysis found that smoking is an independent risk factor for disc degeneration, with smokers showing significantly higher rates of disc degeneration on imaging compared to non-smokers of the same age. The association persists even after controlling for other lifestyle factors.
For surgical patients, smoking's impact is even more direct. Nicotine impairs bone healing — it reduces osteoblast activity (the cells that build bone) and impairs blood supply to the fusion site. Smokers have significantly higher non-union rates after spinal fusion surgery compared to non-smokers — some studies report fusion failure rates two to three times higher in active smokers. Many spine surgeons delay elective fusion surgery in active smokers and strongly recommend cessation before and after surgery.
Smoking also impairs the immune response, increases infection risk, and delays soft tissue healing — all relevant to surgical recovery.
The Verdict
Smoking is a significant, independent, modifiable risk factor for disc degeneration and spinal surgery failure. It is among the most important things a patient considering spine surgery can change.
What To Do Instead
- If you're considering spine surgery: tell your surgeon you smoke and ask about pre-operative cessation programmes — most surgical centres recommend stopping at least 4–6 weeks before elective fusion
- Ask your GP about smoking cessation support — combination pharmacotherapy (varenicline or bupropion) plus behavioural support has the best evidence
- Understand that the disc degeneration risk from smoking is cumulative and modifiable — stopping now matters even if you've smoked for years
- Be honest with your surgeon — your smoking status changes risk calculations and may affect the timing and type of surgery recommended
Yellow Flags — Worth Monitoring
- A smoker with back pain who is worsening — consider whether accelerated disc degeneration is contributing
- Post-fusion pain that's not improving in a smoker — possible non-union, worth imaging and discussing with your surgeon
Red Flags — Get Checked Immediately
- Any smoker with back pain and unexplained weight loss or haemoptysis — rule out pulmonary malignancy with spinal metastases
- Behrend C et al., "Smoking cessation related to improved patient-reported pain scores following spinal care," Journal of Bone and Joint Surgery, 2012;94(23):2161-6. Leboeuf-Yde C, "Smoking and low back pain," Spine, 1999;24(14):1463-70. Goldberg MS et al., "Smoking and musculoskeletal disorders: the results from a cross-sectional and longitudinal study," Annals of Epidemiology, 2000;10(8):477-87.