Chris Masterjohn has a PhD in Nutritional Sciences and is an expert in micronutrients. In this episode, we discuss the common MTHFR mutation, why riboflavin is critical for skin health, collagen supplementation, achieving healthy iron status, and more. To assess and ultimately fix any nutrient deficiencies you may have, check out his very thorough course, Testing Nutritional Status: The Ultimate Cheat Sheet. Use code GENIUS for 20% off.