【摘要】 ２８７名煤矿井下作业工人维生素Ａ摄入仅占供给量标准的６０％，暗适应能力异常率达２９．９７％。血清维生素Ａ缺乏者占３．８０％，亚临床维生素Ａ缺乏者占３９％，提示矿工是维生素Ａ易缺乏人群；补充维生素Ａ１５万国际单位（ＩＵ）后，血清维生素Ａ明显升高，恢复正常率达９１％，说明适当补充维生素Ａ是有效的。更多还原

【Abstract】 he vitamin A (VA) status was investigated in 287 underground coalminers. The resultsshowed that the VA intake was only 60% of RDA and 29. 97% of miners were abnormal in clarkadaption. The incidence of serum VA deficiency was 3. 8% ,and subclincal VA deficiency was 24.39%. It also showed that the serum VAlevel was significantly elevated when supplemented withVA150000 Iu,and 91% of miners who had VA deficiency restored to the normal level.更多还原