PubMed · 469232
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1979. Structured questionnaire for collecting dietary information.. https://pubmed.ncbi.nlm.nih.gov/469232/
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Evidence from both physiological experiments and randomized trials demonstrates that elevating vitamin D status above levels prevailing in the North American and European adult populations improves calcium absorption and reduces fall risk and osteoporotic fractures. Additionally observational data suggest that raising vitamin D status protects against various cancers and autoimmune disorders as well. Hence a strong case can be made for immediate improvement in vitamin D status of the general population.