Endocrine Abstracts

Introduction: Vitamin D is involved not only in the regulation of calcium–phosphorus metabolism; it also plays an important role in maintaining the immune system, muscle strength and neuromuscular conduction. Lack of vitamin D is assumed as one of the mechanisms of autoimmune and infectious diseases. Chronic fatigue syndrome (CFS) – is a syndrome manifesting with a severe chronic physical, mental weakness, psychological disturbances such as anxiety and depression, th...