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Opinions are divided on vitamin D: some believe that there is a widespread vitamin D deficiency in the population, while others believe that it is all just a myth that is used to sell people nutritional supplements. But the reality lies somewhere in between, says science. DETAILED SOURCES & MORE INFORMATION: https://docs.google.com/document/d/1M... CONTENT 0:00 An astonishingly controversial topic 2:44 What is vitamin D? 6:04 The seasonality hypothesis 8:18 Clinical studies on vitamin D 10:15 When do you have a vitamin D deficiency? 13:23 Beware of blanket recommendations 16:21 Cookie recommendations ► Subscribe to maiLab: http://bit.ly/2kru8qh ► Instagram @maithink: / maithink ► Twitter @maithi_nk: / maithi_nk maiLab is produced by Mai Thi Nguyen-Kim for funk (ARD & ZDF) ►funk Web-App: https://go.funk.net ►https://go.funk.net/impressum