Higher drinking-water fluoride exposure vs Null / lowest drinking-water fluoride exposure (reference): Lumbar spine bone mineral density (BMD)
- Population
- Females aged over 50 years
- Intervention
- Higher drinking-water fluoride exposure
- Comparison
- Null / lowest drinking-water fluoride exposure (reference)
- Outcome
- Lumbar spine bone mineral density (BMD)
In females over 50, spine BMD showed an inverted U-shaped curve with a downward trend beginning at lower fluoride concentrations than in the overall analysis; no numeric MD reported in text; ungraded.
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Higher drinking-water fluoride exposure vs Null / lowest drinking-water fluoride exposure (reference) Lumbar spine bone mineral density (BMD) · Females aged over 50 years · Long-term / lifetime fluoride exposure, General population; 37 observational studies (1944-2024), predominantly North America (USA, Canada) and Northern Europe (Finland, Sweden), plus UK, Poland, Italy, Germany, China, Taiwan, South Korea, Ethiopia; exposure mainly community drinking-water fluoride, Females >50, spine BMD dose-response In females over 50, spine BMD showed an inverted U-shaped curve with a downward trend beginning at lower fluoride concentrations than in the overall analysis; no numeric MD reported in text; ungraded. The association of fluoride exposure with bone density and fracture risk: a dose-response meta-analysis. (2025) All outcomes | Inverted U-shaped curve with a downward trend starting at lower fluoride concentrations than the overall analysis (no numeric MD reported in text) | Not reported | GRADE not reported |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| The association of fluoride exposure with bone density and fracture risk: a dose-response meta-analysis. 2025 All outcomes | Inception to August 26, 2025 | 74 | Not applicable |
Related questions
The same intervention and outcome, asked in another population or against another comparator.
- Higher drinking-water fluoride exposure vs Null / lowest drinking-water fluoride exposure (reference) · general population · 1 review
- Higher drinking-water fluoride exposure vs Null / lowest drinking-water fluoride exposure (reference) · Females (all ages) · 1 review
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.