In this episode of Vitaminix, the spotlight is on Vitamin B3, also known as niacin. The show explores its crucial role in converting food into energy, supporting the nervous system, and promoting healthy skin. Niacin is vital for the functioning of enzymes involved in energy metabolism and DNA repair. The episode also covers the benefits of niacin in maintaining cardiovascular health by helping to manage cholesterol levels. Food sources rich in Vitamin B3, like poultry, fish, and whole grains, are highlighted, along with the effects of deficiency, which can lead to conditions like pellagra. The episode explains how niacin is typically safe in recommended amounts, but high doses can cause side effects, underscoring the importance of balanced intake.