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目的探讨补充维生素A(VA)对健康成人铁营养的影响。方法选择120名健康志愿者,随机分为四组,正常膳食,进行6个月的不同VA剂量干预。抽取受试者干预前后空腹晨血并检测。结果干预后4组间血清VA浓度变化差异有统计学意义(P<0.05);干预前后各组受试者血液Hb浓度变化无统计学意义(P>0.05);干预后高剂量组血清铁营养指标变化差异有统计学意义(P<0.05),其他3组差异无统计学意义(P>0.05)。结论铁营养状况正常的成人,通过VA补充机体铁营养状况其他可得到提高。
Objective To investigate the effect of vitamin A supplementation on iron nutrition in healthy adults. Methods 120 healthy volunteers were selected and randomly divided into four groups, normal diet, intervention of different VA doses for 6 months. Fasting morning fasting blood samples were collected before and after intervention. Results There was significant difference in serum VA concentration between the four groups after intervention (P <0.05). There was no significant difference in serum Hb concentration between the two groups before and after intervention (P> 0.05) There was significant difference between the indexes (P <0.05), but there was no significant difference among the other three groups (P> 0.05). Conclusion In adults with normal iron nutrition status, supplementation of body iron supplementation with iron may improve other nutritional status.