Firstly, there is the fact that beriberi which was supposed to have been 'exterminated' in the Navy emerged again from the mid-Taisho period (for example, even in Showa period, the number of patients was 1,153 in 1928, and remained over 1,000 between 1937 and 1941).
第一に海軍で「根絶」したはずの脚気病が大正期の中頃から急増した事実がある（たとえば昭和期に入っても1928年に1,153人、また1937年から1941年まで1,000人を下回ることがなかった）。