Vitamin B3 Niacin Deficiency (Pellagra) | Sources, Causes, Symptoms, Diagnosis, Treatment

The video tutorial covers vitamin B3 (niacin), its functions, sources, and importance in nutrient metabolism. It explains the roles of NAD and NADP in energy production and other cellular processes. The tutorial discusses how vitamin B3 is absorbed and excreted, and identifies causes of deficiency, including poor diet, liver disease, and certain medications. It describes the clinical features of pellagra, a condition caused by niacin deficiency, and outlines its evaluation and treatment through niacin supplementation.

What role does NAD play in the body?

How is vitamin B3 absorbed in the gastrointestinal tract?

What is the significance of riboflavin in the synthesis of niacin?

How is pellagra evaluated and treated?