Why calcium, PTH, vitamin D, kidney function, and urine calcium must be interpreted together. Primary hyperparathyroidism testing starts with a relationship: when blood calcium rises, parathyroid hormone (PTH) should fall. A PTH result that stays […]
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 […]
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