Up to 80% of people may be living with insufficient levels of vitamin D, magnesium, and omega-3 fatty acids—three essential nutrients involved in critical functions like immune defense, cardiovascular health, mood regulation, and brain function. Modern lifestyles—marked by nutrient-poor diets, low sun exposure, chronic stress, and overuse of medications—disrupt the body’s ability to absorb and maintain these key nutrients. Deficiencies often go undiagnosed due to outdated testing, yet they’re strongly linked to conditions like depression, fatigue, diabetes, and heart disease. In this episode, I talk about, along with Andrew Huberman, how modern lifestyles and diets lead to widespread nutrient deficiencies and chronic disease—and how targeted nutrition and lifestyle changes can restore optimal health. Dr. Andrew Huberman is a neuroscientist and tenured Professor in the Department of Neurobiology at the Stanford University School of Medicine. He has made numerous important contributions to the fields of brain development, brain function, and neural plasticity, which is the ability of our nervous system to rewire and learn new behaviors, skills, and cognitive functioning. Dr. Huberman is a McKnight Foundation and Pew Foundation Fellow and was awarded the Cogan Award in 2017, which is given to the scientist making the largest discoveries in the study of vision. His lab’s most recent work focuses on the influence of vision and respiration on human performance and brain states such as fear and courage. Work from the Huberman Laboratory at Stanford University School of Medicine has been published in top journals including Nature, Science, and Cell and has been featured in TIME, BBC, Scientific American, Discover, and other top media outlets. This episode is brought to you by BIOptimizers. Head to bioptimizers.com/hyman and use code HYMAN10 to save 10%. Full-length episodes can be found here: Do you need to take Vitamin D? How Magnesium Deficiency Impacts Your HealthHow to Rewire Your Brain For Sleep