Abstract
(1) It is observed that six females, 4 % of 150 pe: sons examined in a district, where liver-diseases (cholangitis, liver tumor, hepatic cirrhosis) occur very frequently in the island, were suffering from hyperchromic anemia with the hemoglobin content under Sahli 60 %.
Liver enlargement and clinical signs of the lack of vitamin B2 complex are noticed in these six persons.
After three months' muscular work from April to June, the number of persons, suffering from the above-mentioned hyperchromic anemia increased.
(2) On the cardiovascular system, persons corresponding to 6 % of the examined cases are suffering from hypertension.
It is to be noticed that after three months' labor from April to June, the number of persons, whose diastolic pressure is under 60 mm Hg, increased by 30%, as compared with that before the labor.
The author concludes that these circulatory disturbances, implied in the diastolic pressure, are not to be ascrbied to mere seasonal variations, but to such a endogenous change as the lack of vitamin B2 complex or the dysfunctioning of the liver
