Feb 23, 2026Copper and Zinc Balance: Enzymatic Roles, Aging-Related Shifts, and Supplementation RisksCopper and zinc compete for absorption and must stay in balance. Zinc supplementation without copper co-dosing can induce copper deficiency, causing anemia and neurological symptoms. Aging shifts the Cu/Zn ratio and affects superoxide dismutase activity — monitoring both matters.
Feb 21, 2026Lactobacillus acidophilus: Gut Health, Immune Modulation, and Strain-Specific EvidenceLactobacillus acidophilus is one of the most studied probiotic species, with evidence spanning IBS symptom relief, immune modulation, and cholesterol reduction. Strain specificity matters enormously — not all L. acidophilus products produce identical effects.
Feb 18, 2026Vitamin C: Immune Function, Collagen Synthesis, Antioxidant Evidence, and Megadose ClaimsVitamin C is essential for collagen hydroxylation, neutrophil function, and regeneration of other antioxidants including vitamin E. Deficiency is common in older adults and smokers. Supplementation shortens cold duration modestly; megadose claims for cancer and longevity are not supported by RCT evidence.
Feb 17, 2026Astragalus and TA-65: Telomerase Activation, Immune Aging, and Evidence LimitsAstragalus extract (specifically cycloastragenol/TA-65) is the only commercially available small molecule with credible telomerase activation evidence in humans. Effects on telomere length are small and inconsistent. Immune aging benefits are better supported.
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.
Jan 14, 2026Zinc Supplementation: Immune Function, Deficiency Detection, and Optimal FormsZinc deficiency is common in older adults and impairs innate and adaptive immunity. Supplementation in deficient individuals shows clear benefit; excess zinc is counterproductive and can displace copper.