Table 2 Potential extra-skeletal benefits of vitamin D supplementation in individuals with vitamin D deficiency at baseline

From: The health effects of vitamin D supplementation: evidence from human studies

Authors and ref.

Outcome

Overall results

Results in vitamin D-deficient participants

Sluyter et al.44

Brachial blood pressure

NS

NS

Central blood pressure: systolic

NS

−7.5 mm (P = 0.03)

Central blood pressure: diastolic

NS

NS

Six other parameters

NS

P = 0.03–0.003

Sluyter et al.86

All participants: lung function (FEV1)

+16 ml (NS)

+39 ml (NS)

Substudy (n = 442, follow-up 1.1 years): participants with asthma or COPD

+40 ml (NS)

+109 ml (P = 0.08)

Substudy (n = 442, follow-up 1.1 years): participants who had ever-smoked

+57 ml (P = 0.03)

+112 ml (P = 0.04)

Substudy (n = 442, follow-up 1.1 years): participants who had ever-smoked with asthma or COPD

+160 ml (P = 0.004)

NA

Wu et al.a (ref.124)

Pain impact score

NS

NS

Prescription of opioids

NS

NS

Prescription of NSAIDs

NS

RR 0.87 (P = 0.01)

Pittas et al.b (ref.17)

Progression of prediabetes into T2DM: post hoc analysis (n = 103)

NS

HR 0.38 (95% CI 0.18–0.80)

  1. Findings are from post hoc analysis or subgroup analysis of the large clinical trials. COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; NA, not applicable; NS, not significant; RR, relative risk; T2DM, type 2 diabetes mellitus. aSerum 25OHD <50 nmol/l. bSerum 25OHD <30 nmol/l.