Type 2 diabetes mellitus · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Type 2 diabetes: OR 0.63 (95% CI 0.56 to 0.69), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Sporadic colorectal adenoma recurrence · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Sporadic colorectal adenoma recurrence: OR 0.87 (95% CI 0.57 to 1.33), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Ischaemic heart disease · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Ischaemic heart disease: HR 0.72 (95% CI 0.65 to 0.81), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Breast cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Breast cancer (Premenopausal): RR 1.01 (95% CI 0.97 to 1.06), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.
3 findings from 1 review
RR 1.01 [0.97, 1.06]
6 studies · 2890 participants
GRADE not reported
RR 0.99 [0.97, 1.01]
9 studies · 8766 participants
GRADE not reported
OR 0.55 [0.42, 0.71]
21 studies · 26317 participants
GRADE not reported
Metabolic syndrome (prevalent) · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Metabolic syndrome (prevalent): OR 0.49 (95% CI 0.38 to 0.64), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Cognitive function · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Cognition: OR 0.42 (95% CI 0.34 to 0.53), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Diastolic blood pressure · Adults (general population)
Meta-analysis of randomised trials of vitamin D supplementation for Diastolic blood pressure: WMD -0.03 (95% CI -1.98 to 1.92), not statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
WMD -0.03 [-1.98, 1.92]
3 studies
GRADE not reported
Pancreatic cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Pancreatic cancer: OR 2.13 (95% CI 1.02 to 4.47), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Hip Fracture · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Hip fracture (Population-based controls): log ratio of geometric mean -0.51 (95% CI -0.64 to -0.38), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
2 findings from 1 review
log ratio of geometric mean -0.51 [-0.64, -0.38]
9 studies · 1655 participants
GRADE not reported
log ratio of geometric mean -0.26 [-0.33, -0.23]
8 studies · 2201 participants
GRADE not reported
Non-Hodgkin's lymphoma · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Non-Hodgkin's lymphoma (Females): OR 0.81 (95% CI 0.39 to 1.70), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
2 findings from 1 review
Hypertension · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Hypertension: RR 0.70 (95% CI 0.58 to 0.86), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Aggressive prostate cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Aggressive prostate cancer: OR 0.98 (95% CI 0.84 to 1.15), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.
1 finding from 1 review
Cardiovascular mortality · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Cardiovascular disease mortality: RR 0.55 (95% CI 0.36 to 0.85), 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
Cardiovascular disease (prevalent) · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Cardiovascular disease (prevalent): OR 0.67 (95% CI 0.55 to 0.82), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Ovarian cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Ovarian cancer: OR 0.83 (95% CI 0.63 to 1.09), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Stroke · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Stroke: RR 0.61 (95% CI 0.50 to 0.75), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review
Colon cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Colon cancer: OR 0.78 (95% CI 0.56 to 1.07), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
Cholesterol mg/dL · Adults (general population)
Meta-analysis of randomised trials of vitamin D supplementation for Total cholesterol: WMD 1.52 (95% CI -1.42 to 4.46), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.
1 finding from 1 review
WMD 1.52 [-1.42, 4.46]
11 studies
GRADE not reported
Colorectal cancer · Adults (general population)
Meta-analysis of observational studies (higher vs lower 25(OH)D) for Colorectal cancer: RR 0.70 (95% CI 0.58 to 0.84), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.
1 finding from 1 review