In this episode of Ask a Nutritionist, registered dietitian Britni Vincent explains why zinc is essential for everything from immune strength and skin health to digestion, hormones, and even mood. You'll learn surprising signs of deficiency - like white spots on nails, poor wound healing, or changes in taste and smell - and learn how stress, gut health, and certain medications can lower your zinc levels. You’ll also learn the best food sources, when supplementation makes sense, and how small changes can make a big difference in your overall health.