Evidence map›Paper›PMID 40851288›Full record

ArticleMedical science monitor : international medical journal of experimental and clinical research2025

Effect of Long-Term Smoking on Cervical Disc Degeneration: A Retrospective Study.

Murat Kiraz, Hakan Kina

Abstract read
In one paragraph

Article in Medical science monitor : international medical journal of experimental and clinical research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Intervertebral disc degeneration.Nature reviews. Disease primers · 2026
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Murat KirazDepartment of Neurosurgery, Yuksek Ihtisas University, Ankara, Turkey.ORCID 0000-0001-6692-444X
Hakan KinaDepartment of Neurosurgery, Istinye University Gaziosmanpasa Medical Park Hospital, Istanbul, Turkey.ORCID 0000-0002-9741-7720

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND Although studies have shown that nicotine leads to disc degeneration, there is still a need for clinical and radiological studies. This study aimed to evaluate the effects of a smoking history of less than 10 years and of more than 10 years, compared with no smoking history, on cervical intervertebral disc degeneration at the C4-C5, C5-C6, and C6-C7 levels in 293 adult patients with documented degenerative changes, using magnetic resonance imaging (MRI) and the modified Pfirrmann grading system. MATERIAL AND METHODS A total of 293 adult patients with degenerative changes at C4-C5, C5-C6, and C6-C7 disc levels were included in this study. Patients were divided into 3 groups based on smoking duration: non-smokers (n=119), ≤10 years (n=93), and >10 years (n=81). Cervical disc degeneration was assessed using the modified Pfirrmann grading system, based on MRI findings. Each level was graded separately. Data were statistically analyzed to assess the relationship between smoking duration and disc degeneration. RESULTS Cervical disc degeneration at the C4-C5, C5-C6, and C6-C7 levels was significantly higher in both smoking groups (≤10 years and >10 years) than in the non-smoking group (P=0.023-<0.001). However, no statistically significant difference was observed between the ≤10-year and >10-year smoking groups at any level (P=0.250-0.989). Age and sex distributions were statistically similar across all groups (P>0.05). CONCLUSIONS This study provides radiological evidence that smoking accelerates cervical disc degeneration and highlights the clinical importance of smoking cessation in patients with cervical spine disorders.

Indexed as

Cervical VertebraeIntervertebral Disc DegenerationSmokingAdultAgedFemaleHumansIntervertebral DiscMagnetic Resonance ImagingMaleMiddle AgedRetrospective Studies

Identifiers

PMID40851288
PMCPMC12396088

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.