Can Fasting Practices Improve Vitamin D Levels?

Vitamin D deficiency is emerging as a very serious public health problem. Numerous epidemiological studies link vitamin D deficiency to the pathophysiological process of several acute and chronic diseases. Sun exposure, vitamin D supplementation, and fortification of foods with vitamin D are the present strategies adopted to tackle this epidemic. While this can be effective, recent evidence suggests the need to consider the multifaceted causation of vitamin D deficiency such as impaired liver function, kidney function, hyperparathyroidism, and endocrine dysfunction. Therapeutic fasting, a popular nutritional approach has shown to have a positive association with vitamin D levels. This perspective attempts to provide an overview of literature discussing fasting and vitamin D, the possible mechanisms behind this association, and discusses the future possibilities of using fasting as a public/clinical tool in mitigating vitamin D deficiency.