Zinc supplementation in infants with a nutritional pattern of failure to thrive: a double-blind, controlled study.

The objective of this study was to determine whether zinc deficiency is one of the factors involved in nutritional failure to thrive in infants and toddlers. Participants were selected on the basis of anthropometric criteria, particularly a decline in weight velocity preceding changes in length gains. The investigation was designed as a double-blind, randomized, pair-matched, controlled study of dietary zinc supplementation of 6 months' duration.