Abstract
More than 60% of the world’s countries do not have enough blood. According to the analysis report of blood donors recorded in the 2021 annual report of the Taiwan Blood Service Foundation. Taiwan’s blood donors also have hemoglobin disqualification issues, with 5.5% of them failing physical examinations before blood donation. The research method is a systematic review and comprehensive analysis of the literature. Meta-search has shown that long-term donors are faced with iron deficiency. Moderate iron intake by longterm blood donors can improve the impact on hemoglobin and ferritin. Significantly improve the delayed blood donation phenomenon of long-term blood donors.
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