The Effect of Vitamin-Mineral Supplementation on the Intelligence of American Schoolchildren: A Randomized, Double-Blind Placebo-Controlled Trial

Autor: Susan Jansenns, Dennis Nichols, Stephen J. Schoenthaler, Kelly Young, Ian D. Bier
Rok vydání: 2000
Předmět:
Zdroj: The Journal of Alternative and Complementary Medicine. 6:19-29
ISSN: 1557-7708
1075-5535
DOI: 10.1089/acm.2000.6.19
Popis: Context: Many medical, nutrition, and education professionals have long suspected that poor diet impairs the academic performance of Western schoolchildren; academic performance often improves after improved diet. However, others have suggested that such academic gains may be due to psychologic effects rather than nutrition. To resolve this issue, two independent research teams conducted randomized trials in which children were given placebos or low-dose vitamin-mineral tablets designed to raise nutrient intake to the equivalent of a well-balanced diet. Both teams reported significantly greater gains in nonverbal intelligence among the supplemented groups. The findings were important because of the apparent inadequacy of diet they revealed and the magnitude of the potential for increased intelligence. However, none of the ten subsequent replications, or the two original trials, were without limitations leaving this issue in controversy. Objectives: To determine if schoolchildren who consume low-dose vitam...
Databáze: OpenAIRE