Eric Walker added Vitamin D deficiency may increase risk for addiction to opioids and ultraviolet rays to Opioid addiction and dependence and Vitamin D

Eric Walker added Vitamin D deficiency may increase risk for addiction to opioids and ultraviolet rays | EurekAlert! Science News to Vitamin D and Opioids

Eric Walker added Vitamin D deficiency may impair muscle function in older adults, study finds - UPI.com to Vitamin D

Eric Walker added a number of links to Covid-19 and vitamin D, and added Covid-19 and vitamin D to Symptoms, characteristics and effects of Covid-19 and Vitamin D

Eric Walker added Covid-19 and vitamin D and a number of links to Vitamin D, and added Vitamin D to Vitamins, minerals, supplements, probiotics and health

Eric Walker added a number of topics and a number of links to Vitamins, minerals, supplements, probiotics and health, and added Vitamins, minerals, supplements, probiotics and health to Health, nutrition, illness and disease