1990年, Effect of green tea on iron absorption in elderly patients with iron deficiency anemia,结论:No inhibitory effect of green tea on iron absorption was recognized(没有看到绿茶对铁的吸收有抑制作用)。
2007年, Consumption of black, green and herbal tea and iron status in French adults,结论:The data suggest that normal apparently healthy adults are not at risk of iron depletion owing to any kind of tea drinking(数据显示,正常健康的成年人,无论饮用任何种类的茶,都没有失去铁质的风险)。
2009年, Green tea does not inhibit iron absorption(绿茶不会抑制铁的吸收)。