Signs of scurvy and pellagra were increasing.
"Police Your Planet"
Lester del Rey
3. In the treatment and prevention of pellagra, diet is the essential factor.
"The Vitamine Manual"
Walter H. Eddy
His conclusions may be quoted in full as representing the latest summary of evidence now extant: 1. The hypothesis that there is a causal relation between pellagra and a restricted vegetable diet has been substantiated by direct proof to this effect and has led to results of considerable practical and scientific value.
"The Vitamine Manual"
Walter H. Eddy