Tag: vitamin toxicity

Vitamin and nutrient deficiency tests are blood and, less often, urine tests used to investigate a defined question about low intake, malabsorption, blood loss, medication effects, pregnancy-related risk, a prior abnormal result, or possible supplement […]

Supplements can fill dietary gaps and support specific health goals—but more isn’t always better. Taking doses above the Tolerable Upper Intake Level (UL) or “stacking” multivitamins with single-nutrient products can tip you into vitamin excess, leading to symptoms […]