Vitamin D deficiency seems to be an unnoticed and underrated global health problem, with 35% of adults in the United States estimated to be vitamin D deficient whereas over 80% of adults in Pakistan, India, and Bangladesh are Vitamin D deficient. In the United States, 61% of the elderly population is vitamin D deficient whereas 90% in Turkey, 96% in India, 72% in Pakistan, and 67% in Iran were vitamin D deficient. The community-based Indian studies of the past decade done on apparently healthy controls reported a prevalence ranging from 50% to 94%.
It is proposed that screening and prophylactic measures policy be strategized especially in high-risk groups like the elderly, high altitude and sunlight deficient inhabitants, obese, and pregnant women.