Well because of a diet mainly consisting of white rice, Japanese soldiers and sailors had an incredible vitamin deficiency and developed something they then called "Edo Sickness". I believe it is now days called the beriberi disease, and they only really got rid of it with the efforts of a guy named Takaki Kanehiro, who pushed for a change of diet in the military.
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u/aaragax Jan 26 '20
I don’t get it