YOU SAID:

I think I have an iron deficiency

INTO JAPANESE

鉄分が不足していると思う

BACK INTO ENGLISH

I think it lacks iron.

INTO JAPANESE

鉄が足りないと思う。

BACK INTO ENGLISH

I don't think there's enough iron.

INTO JAPANESE

鉄が足りないと思う。

BACK INTO ENGLISH

I don't think there's enough iron.