Corinne Furnari and Carol Petersen, discussing the vital role of magnesium in human health, its connection to various chronic diseases like ALS, Parkinson's, and Alzheimer's, and its interactions with other essential nutrients such as vitamin D, calcium, progesterone, boron, B6, zinc, and selenium. They emphasize the challenges in diagnosing magnesium deficiency and advise on proper supplementation and absorption.