2026-02-23
Copper and Zinc Balance: Enzymatic Roles, Aging-Related Shifts, and Supplementation Risks
Copper 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.
2026-02-22
Anemia and Iron Deficiency in Aging: Diagnosis, Causes, and Supplementation Evidence
Anemia affects 10–20% of adults over 65 and is independently associated with frailty, cognitive decline, and mortality. Iron deficiency is the most common cause but is often missed in older adults. Supplementation restores function when deficiency is confirmed — but iron excess is harmful and routine supplementation without deficiency is not indicated.
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.
2026-02-11
Age-Specific Supplement Needs: Shifting Priorities from Your 40s to Your 70s
Supplement needs shift meaningfully across decades as physiological priorities change. In the 40s, mitochondrial and cardiovascular foundations matter most. In the 50s and 60s, muscle preservation and bone density become critical. In the 70s, anti-inflammatory and immune support take priority.
2026-02-10
Sex Differences in Supplement Response: Iron, Creatine, Hormonal Context, and What Research Shows
Biological sex affects supplement needs and responses in meaningful ways. Iron requirements differ substantially. Creatine response patterns differ between sexes. Hormonal context (menstrual cycle, menopause, testosterone) affects supplement efficacy and safety profile.