In this podcast, Mark Sisson discusses the rationale for why supplementation can be considered in pursuit of a healthy Primal lifestyle. Starting with the question of whether we need to supplement or not and how it aligns with the primal/paleo dietary philosophy, Sisson explains that the influences of hectic modern life and the limitations of modern dietary options might call for use of certain dietary supplements in a strategic manner. For example, taking vitamin D in the wintertime when sun exposure is unavailable. Sisson covers various popular categories of supplements, the reasons to use them, and how to select for high quality products. The categories of supplements discussed are vitamin D, omega-3 fish oil, multivitamins, antioxidants, probiotics, and high protein meal replacements.