[Skip to Content]
[Skip to Content Landing]
Other Articles
July 15, 1939

Studien über das Vitamin A beim Menschen

JAMA. 1939;113(3):257. doi:10.1001/jama.1939.02800280069033

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.


The author has made an extensive study of vitamin A in relation to human nutrition, and the present volume provides an account of these investigations. The first portion of the book includes a discussion of the chemistry of vitamin A and methods for the determination of vitamin A and of carotene. The account of the investigation includes chapters about (1) introduction and statement of the problem, (2) night blindness as a sign of vitamin A deficiency, (3) review of investigagations of night blindness in large groups, (4) the present investigation, (5) statistical methods, (6) methods and review of earlier investigations on the assimilation of carotenoids and vitamin A in the blood, (7) investigation on the assimilation of carotenoids and vitamin A in the blood serum, (8) relationship between the threshold of light perception and the vitamin A content of the serum, (9) relationship between the vitamin A content of the

First Page Preview View Large
First page PDF preview
First page PDF preview