Body‐mass index (BMI) · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Body mass index: Z score -0.15 (95% CI -0.19 to -0.11), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Sporadic colorectal adenoma · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Sporadic colorectal adenoma: OR 0.82 (95% CI 0.69 to 0.97), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Type 2 diabetes (prevalent) · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Type 2 diabetes (prevalent): OR 0.45 (95% CI 0.25 to 0.82), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
All cause mortality · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for All cause mortality: HR 0.72 (95% CI 0.66 to 0.78), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Rectal cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Rectal cancer: OR 0.50 (95% CI 0.29 to 0.88), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Colorectal cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Colorectal cancer: OR 1.01 (95% CI 0.59 to 1.73), not statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
OR 1.01 [0.59, 1.73]
4 studies
GRADE not reported
Breast cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Breast cancer: OR 0.99 (95% CI 0.68 to 1.44), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Colon cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Colon cancer: OR 0.88 (95% CI 0.57 to 1.35), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
OR 0.88 [0.57, 1.35]
4 studies
GRADE not reported
Aggressive prostate cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Aggressive prostate cancer: OR 0.75 (95% CI 0.48 to 1.17), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.
1 finding from 1 review
Prostate cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Prostate cancer: OR 0.99 (95% CI 0.87 to 1.14), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.
1 finding from 1 review
Small‐for‐gestational age · pregnant women and their infants..
Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Small for gestational age: OR 0.54 (95% CI 0.44 to 0.67), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Pre‐eclampsia · pregnant women and their infants..
Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Pre-eclampsia: OR 0.56 (95% CI 0.39 to 0.80), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Head circumference (mm) · pregnant women and their infants..
Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Head circumference: WMD 0.05 (95% CI -0.24 to 0.34), not statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Birth length · pregnant women and their infants..
Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Birth length: WMD 0.19 (95% CI -0.26 to 0.65), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.
1 finding from 1 review
Birthweight (g) · pregnant women and their infants..
Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Birth weight: WMD 130.9 (95% CI 75.1 to 186.7), statistically significant. Umbrella review outcome-level evidence grade: Probable.
1 finding from 1 review
Gestational diabetes · pregnant women and their infants..
Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Gestational diabetes: OR 0.67 (95% CI 0.53 to 0.85), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Dental caries · Adults (≥18 years)
After adjustment for confounders, obesity/overweight was not associated with dental caries (OR 1.00, 95% CI 0.89 to 1.12; ungraded).
9 findings from 1 review
Multimorbidity patterns of dental caries and obesity/overweight among adults: a systematic review and meta-analysis. 2025 All outcomesPopulation-based cross-sectional studies; adults ≥18 years; 6 countries (Turkey, Portugal, China, Japan, Saudi Arabia, Israel, South Korea) · By confounder adjustment: adjusted
OR 1.00 [0.89, 1.12]
Studies not reported
GRADE not reported
Multimorbidity patterns of dental caries and obesity/overweight among adults: a systematic review and meta-analysis. 2025 All outcomesPopulation-based cross-sectional studies; adults ≥18 years; 6 countries (Turkey, Portugal, China, Japan, Saudi Arabia, Israel, South Korea) · By region: West Asia
OR 1.23 [0.96, 1.50]
Studies not reported
GRADE not reported
Multimorbidity patterns of dental caries and obesity/overweight among adults: a systematic review and meta-analysis. 2025 All outcomesPopulation-based cross-sectional studies; adults ≥18 years; 6 countries (Turkey, Portugal, China, Japan, Saudi Arabia, Israel, South Korea) · By BMI classification: overweight (vs study-defined non-overweight: normal or low weight)
OR 0.99 [0.98, 1.00]
Studies not reported
GRADE not reported
Show 6 more findings
Prevalence and severity of oral and TMJ diseases/conditions (periodontal status and dental caries) · Children and adolescents with juvenile idiopathic arthritis (JIA)
Some studies suggested greater JIA disease activity/severity (and certain medications) was associated with worse periodontal and caries outcomes, but small samples meant no solid conclusion could be drawn (ungraded).
1 finding from 1 review
Odds of higher caries (DMFT) category · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)
In the adjusted ordinal model geographical location was not independently significant for DMFT category (OR 0.57, 95% CI 0.24 to 1.35); not GRADE-rated.
1 finding from 1 review
Odds of higher caries (DMFT) category · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)
HDI was not independently associated with DMFT category in the adjusted model (OR 1.82, 95% CI 0.32 to 10.47); not GRADE-rated.
1 finding from 1 review