2026-02-20
Elevated Homocysteine Risk: Evidence for Vitamin B12 and TMG Strategies
Homocysteine is a useful risk-context biomarker. B-vitamin repletion and trimethylglycine can lower levels reliably, but clinical-outcome benefit depends on baseline risk and protocol quality.
2026-02-19
Vitamin B12: Deficiency in Aging, Neurological Consequences, and Supplement Form Evidence
B12 deficiency affects 10–30% of adults over 50, largely due to reduced gastric acid and intrinsic factor. Deficiency causes irreversible neurological damage if uncorrected. Methylcobalamin and adenosylcobalamin are preferred over cyanocobalamin for neurological applications. High-dose oral B12 can bypass intrinsic factor.
2026-02-18
Vitamin D3 and Telomere Attrition: Findings from the VITAL Randomized Trial
A 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.
2026-02-17
NAD+ Precursor Supplementation and Cognitive Fatigue: Mechanism and Human Evidence
NAD+ precursors reliably elevate blood NAD+ in humans and activate mitochondrial energy pathways. Whether this translates to clinically meaningful reductions in cognitive fatigue requires larger, longer trials.
2026-02-12
Biomarker Testing Before Supplementing: B12, Vitamin D, Homocysteine, Ferritin, and CRP
Supplementing without baseline testing is guesswork. Vitamin D, B12, folate, ferritin, homocysteine, and hs-CRP are the most actionable starting points. This guide explains what each test reveals, what ranges mean, and which supplements to prioritize based on results.