The Antioxidant Paradox: High-Dose Vitamins Blunt Exercise Adaptations in Older Adults
The review finds that high‑dose vitamin C and E combined with collagen blunt exercise‑induced muscle growth, bone density gains, and neuroprotective adaptations in older adults, while moderate doses support structural health. Randomized trials show lean‑mass increases of only 1.4 % versus 3.9 % in placebo when antioxidants are taken in supraphysiologic amounts. Timing matters: 10‑30 g collagen with 500‑1000 mg vitamin C before training aids tendon remodeling, and vitamin E should stay below 400 mg and be separated from workouts. The paper advocates a nuanced, context‑dependent supplementation strategy.
11 Ways Vitamin D Shapes Your Brain — From Before Birth To Old Age (P)
Vitamin D, traditionally celebrated for bone health, is increasingly linked to brain function across the lifespan. Recent studies connect prenatal deficiency to lower IQ, childhood shortfalls to ADHD, adult insufficiency to mood disorders, and senior deficits to accelerated cognitive decline....