Since the start of the pandemic, natural supplements have been a bone of contention with researchers, pharmaceutical companies, doctors and health experts. Newly published data again support past research that vitamin D has a significant impact on COVID-19. Vitamin D was discovered in the early 1900s. Work by Sir Edward Mellanby from Great Britain and Elmer McCollum from the University of Wisconsin demonstrated that vitamin D could cure rickets. In the early 1970s, 25-OH-D3 was identified as scientists focused on the endocrine system, and the function that vitamin D has in the body. Your body is capable of producing vitamin D with exposure to sunlight. In fact, with adequate exposure, your skin can produce enough vitamin D to support your health. Early research showed that too little vitamin D led to poor calcium homeostasis. In turn, this can lead to osteoporosis, osteomalacia and rickets. Multiple studies have since demonstrated that a …