This episode we speak with article authors Dr. Rosemary Dall, Dr. Deeptha Sukumar, and Dr. Deborah Clegg about their article "The implications of vitamin D deficiency on COVID-19 for at-risk populations" to determine the current knowledge about the risk of COVID-19 development for populations at risk for vitamin D deficiency, including individuals living with overweight and obesity, those of older age, and racial or ethnic minorities.