Nutritionist Leyla Muedin discusses the importance of our taste buds and their crucial role in the sensory experience of eating. She explains how the sense of taste is significantly influenced by the sense of smell and outlines various factors that can impair taste, such as nasal congestion, deficiencies in B vitamins and zinc, reduced saliva production, and the use of certain medications. Leyla also covers how aging and dental appliances can affect taste perception. Additionally, she shares findings from a Brazilian longitudinal study on the correlation between ultra-processed food consumption and increased risks of depression over eight years. Leyla emphasizes the benefits of substituting ultra-processed foods with unprocessed or minimally processed foods to decrease depression incidence.