Ryukai MATSUMOTO says that it may not be said all the deaths were caused by the mining pollution, however, since there were a greater number of deaths than births while there were more births than deaths in Japan at that time, those deaths should be considered to have been caused by the mining pollution (it is considered that in fact among those deaths, many cases were caused by malnutrition, since the people became poor by the mining pollution; however Shozo TANAKA and Matsumoto and others said that those cases should be counted as the victims by the mining pollution).
松本隆海は、すべてが鉱毒が原因だとはいえないかもしれないが、当時の日本は出生数のほうが多いにもかかわらず、死者数のほうが多いのは、鉱毒に関連があるとしている（実際には、鉱毒が原因で貧困となり、栄養状態が悪化して死亡した者が多く含まれていると考えられるが、田中正造や松本はこれらも鉱毒による死者とすべきだとしている）。