Tech neck from my phone is destroying my cervical spine
She was 29 and worked in tech. She spent an average of six hours a day looking at her phone. She'd read an article about "tech neck" with a diagram showing 27kg of force on the cervical spine when looking down at 60 degrees. She was terrified she was causing irreversible damage. She wanted to know whether she needed to stop using her phone entirely.
What Patients SayI've read that looking down at your phone puts 27kg of force on your neck. This must be causing permanent damage to my cervical spine over time.
Where Did This Come From?
In 2014, a paper by Kenneth Hansraj, a New York spine surgeon, calculated the theoretical force on the cervical spine at various angles of forward head flexion. At 60 degrees — head tilted forward looking down at a phone — the calculated force was 27kg. The paper went viral. Headlines declared that smartphones were creating a generation of people with destroyed necks. The term "tech neck" was coined.
The paper was real. The calculation was real. The leap from biomechanical calculation to "your cervical spine is being destroyed" was not. Hansraj himself did not claim smartphones were causing structural damage — but the media did, and the message stuck.
What the Science Actually Says
The forward head posture associated with smartphone use does increase the mechanical load on the cervical spine — that part is true. But increased load is not the same as structural damage. The cervical spine is designed to handle variable loads and positions throughout the day. The issue isn't the load at any given moment — it's sustained, unvaried loading without movement.
Epidemiological studies on smartphone use and neck pain show inconsistent results. Some studies find associations between screen time and neck pain; others don't. Crucially, the studies find associations with neck pain and discomfort — not with accelerated disc degeneration, structural damage, or cervical spine disease on imaging. Here's what consistently predicts neck pain in smartphone users: not the time spent on the phone, but physical inactivity, sedentary overall lifestyle, and lack of breaks.
The same principle we've seen throughout this booklet — it's not the position, it's the absence of movement.
The good news: tech neck posture-related discomfort is reversible with movement, strengthening, and habit modification. There is no evidence it causes permanent structural damage in otherwise healthy people. The frightening headlines dramatically overstated what the biomechanical calculation actually showed.
The Verdict
Looking down at your phone does increase cervical load. This can cause discomfort. There is no good evidence it causes permanent structural damage. The solution is movement and breaks, not abandoning your device.
What To Do Instead
- Take regular breaks — every 20–30 minutes of phone or screen use, move your neck through its range of motion
- Raise your phone or screen to eye level where possible — this reduces forward head flexion
- Strengthen the neck and upper back muscles — these counterbalance forward head posture and improve load tolerance
- Don't obsessively police your head position — the anxiety of constant self-monitoring is itself a contributor to neck pain
Yellow Flags — Worth Monitoring
- Neck pain from phone use that radiates into the arm — this shifts from postural discomfort to possible nerve involvement, worth assessing
- Neck pain accompanied by headaches that consistently arise with screen use — worth a clinical assessment to distinguish cervicogenic headache from tension headache
Red Flags — Get Checked Immediately
- Neck pain from screen use accompanied by arm weakness, hand clumsiness, or balance problems — these are myelopathic symptoms, not postural
- Hansraj KK, "Assessment of stresses in the cervical spine caused by posture and position of the head," Surgical Technology International, 2014;25:277-9. Gustafsson E et al., "Texting on mobile phones and musculoskeletal disorders in young adults," Applied Ergonomics, 2017;58:208-214. Xie Y et al., "Does forward head posture affect the risk of neck pain?" Clinical Spine Surgery, 2017;30(7):E903-E908.