Explainers

Plain-language deep dives for public audiences

Why Afternoon Fatigue Strikes After Lunch—and How Nutrition Can Help

Post-lunch afternoon fatigue is a common metabolic phenomenon driven by blood sugar fluctuations and circadian rhythms. Registered dietitians outline three…

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Retinol vs Beta-Carotene: BCO1 Genetics and Why Conversion Is Unreliable

Beta-carotene only becomes vitamin A after an enzymatic conversion — and common gene variants cut…

Why B12 Needs Amber Glass: Cobalamin Photodegradation

Shine light on a methylcobalamin solution and the vitamin starts disassembling itself within minutes. The…

Methylcobalamin vs Cyanocobalamin: The Form Difference Explained

One is the coenzyme your cells actually use; the other is a stable synthetic that…

Vitamin D3 + K2: Absorption vs Direction — How the Pairing Works

D3 decides how much calcium enters the body; K2-activated proteins influence where it ends up.…

Who Is at Risk of B12 Deficiency: Older Adults, Vegans, Metformin and PPI Users

B12 deficiency clusters in four predictable groups — and its cruellest feature is that irreversible…