Osteoporosis, bone & mineral

Impact of smoking, diabetes, and exercise on dementia risk in women with osteoporosis: a nationwide cohort study

Osteoporos IntPublished Retrospective cohort study

Main finding · Dementia (adjusted for demographics and chronic comorbidities)Result — go to the resultHazard ratio 1.18

Authors' conclusion

This population-based cohort study demonstrates that having osteoporosis significantly increases dementia risk, which is amplified by smoking and diabetes but reduced by regular exercise.

Study context

Population
Women aged 66 years in the National Screening Program for Transitional Ages for Koreans, first checkup January 2013–December 2016
Participants
261,343 women
Exposure
Osteoporosis and osteopenia vs normal bone mineral density (BMD)
Outcome
Dementia
Methodological detailsnationwide, population-based
  • Nationwide
  • Population-based

Main finding

As reported in the abstract

Dementia (adjusted for demographics and chronic comorbidities)

Hazard ratio

1.18

Observational data: associations, not effects.

Further findings

OutcomeParticipants with osteoporosis who exercised regularlyParticipants with osteoporosis who did not exerciseHR
Vascular dementiaOsteoporosis vs Normal BMD · reported as 1.25-fold higher risk1.25
Dementia by osteoporosis and smokingParticipants with osteoporosis who smoked vs nonsmoking participants with normal BMD · 1.82-fold higher HR1.82
Dementia by osteoporosis and DMParticipants with osteoporosis with DM vs participants with normal BMD without DM · 1.92-fold higher HR1.92
Dementia by osteoporosis and regular exercise
HR1.001.18

Original publication

Impact of smoking, diabetes, and exercise on dementia risk in women with osteoporosis: a nationwide cohort study. Osteoporos Int. Published 10 June 2025. doi:10.1007/s00198-025-07524-y

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