Abstract
Three decades have passed since the 40th anniversary edition of the Fat Soluble Vitamins Research Committee was published. In the nutritional field of vitamin D, there has been a remarkable shift in the recognition of the nutritional significance of 25-hydroxyvitamin D during these three decades. This review would be focused on the significance of 25-hydroxyvitamin D, vitamin D status of Japanese people or Dietary Reference Intakes for Japanese, with looking back on researches that the committee members have been involved in.
