During the years 1962 to 1965 extensive dietary surveys were conducted on 2 164 schoolchildren, from 4 racial groups, living in Pretoria.
Since the true prevalence of protein calorie malnutrition (PCM) in South African Bantu is not known, groups of rural and urban children, 2486 Bantu and 467 Whites, were studied to assess their nutritional state and health.
Weights and heights of South African pre-school children were measured in rural and urban areas.
Advances in knowledge of the causes and effects of protein calorie malnutrition have led to a greater awareness of the problem and in turn to improved methods of prevention.
Gingival bleeding and fibrous gingival hyperplasia was noticed in a colony of 80 vervet monkeys used in long-term toxicity studies.