Feb 18, 2026Vitamin D3 and Telomere Attrition: Findings from the VITAL Randomized TrialA VITAL sub-study (n=1,054, 4 years, 2,000 IU/day vitamin D3) found reduced leukocyte telomere attrition in the vitamin D group versus placebo. Omega-3 showed no significant effect. Telomere length is a surrogate marker; clinical outcome implications are uncertain.
Feb 13, 2026Vitamin D Deficiency and Immune Function: Prevalence, Evidence, and Supplementation ProtocolVitamin D deficiency is common and associated with higher infection risk. Meta-analytic RCT evidence suggests supplementation can reduce acute respiratory infection risk, especially in deficient groups.
Feb 2, 2026Immune Resilience in Aging: Zinc, Vitamin D, Vitamin C, and Elderberry — Evidence GradientImmunosenescence — the age-related decline in immune function — increases infection risk and reduces vaccine efficacy. Zinc and vitamin D deficiency correction has clear evidence. Vitamin C has moderate support. Elderberry evidence for acute illness is positive but limited for long-term immune maintenance.