This webinar consists of a 24-minute presentation by Dr. Hollis, followed by 15 minutes of questions and answers. Hollis thoroughly explains how vitamin D supplementation
Sunlight plays a far greater role in human health than most people realize, extending beyond bone health from vitamin D production into circadian biology, immune
Vitamin D plays a critical role in how our immune system functions at the cellular and genetic level. In this Vitamin D Study Hour, Dr.
Vitamin D plays a far greater role in pregnancy than many current guidelines suggest. In this Vitamin D Study Hour, Dr. Scott Weiss (Harvard Medical
Vitamin D Study Hour with GrassrootsHealth: Vitamin D, Insulin Resistance & Type 2 Diabetes Featuring Dr. Barbara Boucher Dr. Barbara Boucher, an internationally respected physician-scientist
Welcome to this Vitamin D Study Hour with Dr. Michael Holick, where we discuss Practical Uses of Vitamin D for Disease Prevention — from what
Learn about the science of calcium–magnesium balance and its vital role in supporting vitamin D activation, hormone regulation, muscle function, and long-term health. In this
In this Vitamin D Study Hour, GrassrootsHealth welcomes Dr. Richard Cheng, MD, PhD, for an in-depth discussion on vitamin D resistance—a growing and often misunderstood
In this in-depth presentation, Dr. Bruce Hollis, PhD, a leading expert in vitamin D, pediatrics, and maternal health, explores the critical role of vitamin D
Introducing Dr. Renu Mahtani, physician, author, and global educator in autoimmune health, nutritional medicine, and vitamin D therapy – and the first special guest scientist
A New Umbrella Review Highlights Benefits for Several Allergic Conditions Key Points A new review found that lower vitamin D levels were consistently associated with
