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Hip fractures and fluoridation in Utah's elderly population
C Danielson1, J L Lyon, M Egger
1Department of Family and Preventive Medicine, University of Utah, Salt Lake City 84132.
JAMA
|August 12, 1992
Summary
This study found that water fluoridation at 1 ppm was associated with a small but significant increase in hip fracture risk for elderly men and women. These findings suggest a potential link between low-level fluoride exposure and increased fracture incidence in older populations.
Area of Science:
- Public Health
- Epidemiology
- Gerontology
Background:
- Water fluoridation is a common public health measure for dental health.
- The effects of water fluoridation on bone health, particularly hip fractures in the elderly, require further investigation.
Purpose of the Study:
- To evaluate the association between community water fluoridation at 1 part per million (ppm) and the incidence of hip fractures in individuals aged 65 and older.
Main Methods:
- An ecological cohort study design was employed.
- Compared hip fracture incidence rates in three Utah communities: one with fluoridated water (1 ppm) and two without.
- Analyzed hospital discharge data for first-time hip fractures in individuals 65+ over a 7-year period, excluding specific cases.
Main Results:
- A relative risk of 1.27 for hip fractures was observed in women residing in the fluoridated area compared to non-fluoridated areas (95% CI = 1.08 to 1.46).
- A relative risk of 1.41 for hip fractures was observed in men residing in the fluoridated area compared to non-fluoridated areas (95% CI = 1.00 to 1.81).
Conclusions:
- The study identified a statistically significant increase in hip fracture risk for both men and women exposed to 1 ppm of fluoride in community water.
- These findings suggest that low levels of fluoride exposure through water may be associated with an elevated risk of hip fractures in the elderly population.
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