Another example of a nutritional disease is beriberi. It plagued the Japanese Navy in the 19th century: >Beriberi was a serious problem in the Japanese navy: S

Another example of a nutritional disease is beriberi. It plagued the Japanese Navy in the 19th century: >Beriberi was a serious problem in the Japanese navy: Sailors fell ill an average of four times a year in the period 1878 to 1881, and 35% were cases of beriberi. It was caused by a vitamin B1 deficiency. Sailors were eating mainly white rice (polished) rather than brown rice (unpolished) while underway. A more varied diet eventually fixed the problem. https://en.wikipedia.org/wiki/Thiamine_deficiency https://en.wikipedia.org/wiki/Thiamine_deficiency