A meta-analysis of the effects of cigarette smoking on bone mineral density

K. D. Ward, Robert Klesges

Research output: Contribution to journalReview article

266 Citations (Scopus)

Abstract

To determine the magnitude and mediators of the association between cigarette smoking and bone mass in the epidemiologic literature we reviewed articles, published abstracts, and conference proceedings, identified through MEDLINE, psychological abstracts, conference proceedings, and article bibliographies. We studied cross-sectional and prospective human studies that provided a quantitative measure of bone mass (X-ray, absorptiometry, or computed tomography) as a function of cigarette smoking exposure. Effects were expressed as pooled standardized mean differences for categorical comparisons (e.g., bone mass in current versus nonsmokers), and as pooled correlation coefficients for continuous comparisons (e.g., correlation of bone mass and pack-years of smoking). Effects were derived for combined bone sites (all bone sites pooled within each study) and four specific sites (hip, lumbar spine, forearm, and os calcis), and were examined overall and as a function of subject and methodologic characteristics (gender, age, body weight, menopausal status, health status). Data were pooled across 86 studies, enrolling 40,753 subjects. Smokers had significantly reduced bone mass compared with nonsmokers (never and former smokers) at all bone sites, averaging a one-tenth standard deviation (SD) deficit for combined sites. Deficits were especially pronounced at the hip, where the bone mass of current smokers was one-third of a SD less than that of never smokers. Overall, effects were greatest in men and in the elderly, and were dose-dependent. In prospective studies, smokers had greater rates of bone loss over time compared with nonsmokers. Bone mass differences remained significant after controlling for age and body weight differences between the two groups. Absolute effect sizes at most bone sites were greatest for current smokers compared with never smokers, intermediate for current smokers compared with former smokers, and lowest for former smokers compared with never smokers, suggesting that smoking cessation may have a positive influence on bone mass. Based on these data, it is estimated that smoking increases the lifetime risk of developing a vertebral fracture by 13% in women and 32% in men. At the hip, smoking is estimated to increase lifetime fracture risk by 31% in women and 40% in men. It appears that smoking has an independent, dose-dependent effect on bone loss, which increases fracture risk, and may be partially reversed by smoking cessation. Given the public health implications of smoking on bone health, it is important that this information be incorporated into smoking prevention and cessation efforts.

Original languageEnglish (US)
Pages (from-to)259-270
Number of pages12
JournalCalcified Tissue International
Volume68
Issue number5
DOIs
StatePublished - Jan 1 2001

Fingerprint

Bone Density
Meta-Analysis
Smoking
Bone and Bones
Smoking Cessation
Hip
Body Weight
Pelvic Bones
Prospective Studies
X Ray Computed Tomography
Photon Absorptiometry
Bibliography
Forearm
MEDLINE
Health Status
Spine
Public Health
Psychology

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism
  • Orthopedics and Sports Medicine
  • Endocrinology

Cite this

A meta-analysis of the effects of cigarette smoking on bone mineral density. / Ward, K. D.; Klesges, Robert.

In: Calcified Tissue International, Vol. 68, No. 5, 01.01.2001, p. 259-270.

Research output: Contribution to journalReview article

Ward, K. D. ; Klesges, Robert. / A meta-analysis of the effects of cigarette smoking on bone mineral density. In: Calcified Tissue International. 2001 ; Vol. 68, No. 5. pp. 259-270.
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