05 Dec 2019 --- Naturally occurring in the body as a response to sun exposure, vitamin D provides a range of health benefits, from physiological to mental health. Research has noted its link to an array of health-boosting properties. Moreover, experts and policy continue to promote supplementation with the nutrient for at-risk populations, such as those residing in countries with reduced sun exposure. NutritionInsight takes a comprehensive look at the research so far, and enlists experts’ opinions on vitamin D supplementation and its importance to human health.