Deficiency in healthy individuals is rare
Underlying health conditions: Some health conditions, such as gastrointestinal disorders or liver disease, can affect B12 absorption and metabolism, potentially leading to shorter-lasting benefits from B12 injections
Quality Control Problems Some online products may contain: Without independent laboratory verification, buyers often rely entirely on trust
New mouse dw allele: genetic location and effects on lifespan and growth hormone levels
Endurance athletes face unique challenges that may increase B12 needs: prolonged training sessions stress the digestive system, potentially impairing absorption, while increased red blood cell turnover demands consistent B12 availability
Pickart & Margolina 2014 Chelates free copper, reduces oxidative damage, and upregulates superoxide dismutase the body's primary antioxidant enzyme