Nowadays, a recent research found that people 1 in 3 vitamin D deficiency. The research indicated that the people who live in urban areas are at risk of vitamin D lack such as, in Bangkok have statistics for vitamin D deficiency 64.5% and who lived in the city of Kon kean lack of vitamin D statistics to 60%. . The epidemiologic evidence indicates a relation between inadequate vitamin D levels and such diseases as cancer, diabetes, hypertension, rheumatoid arthritis, heart failure, acute myocardial infarction, dementia and Alzheimer’s disease.Although the causative relation between vitamin D deficiency and these diseases is yet to be defined, so far the epidemiologic evidence strongly advocates for the medical community to look for better prevention approaches to reduce vitamin D deficiency.