A Comprehensive Review on the Prevalence of Vitamin D Deficiency among School- Aged Children around the World

Abstract

Vitamin D is an essential compound for growth and development throughout the human lifecycle. The deficiency of vitamin D is a major health problem worldwide in all age groups. It maintains normal level of calcium, Phosphorus and provide protection from the diseases and individual's risk of developing, diabetes, multiple sclerosis, lupus, rheumatoid arthritis, heart failure, strokes, hypertension, peripheral vascular disease, coronary heart disease, muscle weakness, respiratory tract infection, skeletal deformities and others. Vitamin D deficiency is more prevalent in countries such as Saudi Arabia,