Abstract
1. We exermined on the students of our college what kinds of vitamin-preparates were usually taken as tonic.
It was found that in 1951, average 2.1 persons per family took vitamin-remedies occasionally, and one person per 5.2 families took them daily. In 1957, this increased to the rate of one case per 1.2 family.
Among the various kinds of vitamin-preparates, vitamin B1 was the favorite, a few took vitamin A and few vitamin B2 and C.
2. The effects of the vitamins was observed on the growth rate of male albino rats, which were divided into three groups; the control group, the protein rich group fed simultaneously with the mixture of vitamin B-complex, and the protein rich group fed vitamins after certain interval.
The basal rations of food were the same throughout three B groups. It was found that the protein rich group fed at the same time with vitamins showed more rapid growth than the group fed vitamins seperately.
This fact suggests that the food efficiency is raised when the essential ingredients are taken at the same time.
