In this episode, hosts Melissa and Jam dive into the basics of vitamins. They discuss the origins of vitamins, why they are labeled with letters, and the difference between water-soluble and fat-soluble vitamins. The episode also touches on the history of vitamin regulation, the necessity of supplementing vitamins, and the impact of diet on vitamin intake. Finally, they challenge listeners to assess the variety of plant-based foods they consume in a week to promote a healthier diet.