Menstrual blood contains relatively high hemoglobin, plasma protein and hemoglobin, so women will lose a lot of iron after menstruation and should be supplemented with more iron. Tea contains more than 30% tannic acid, which is easy to combine with iron ions in the intestine, resulting in precipitation, which hinders the absorption of iron ions by intestinal mucosa.

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/gz.people.com.cn/N2/2018/0612/c344109-31695280.html "target =" _ blank "title =". Women pay attention to diet during menstruation "> People's Daily Online-What are the dietary taboos for women during menstruation? Women have a special diet during menstruation.