The effects of long-term administration of guarana on the cognition of normal, elderly volunteers
Palavras-chave:
Paulinia cupana (guarana), Cognition, Medicinal plantsResumo
A Paulínia cupana (o guaraná) é uma planta da flora brasileira que goza de grande prestígio na medicina popular, entre eles de ser potente estimulante das funções cerebrais. Os autores avaliaram os efeitos da administração crônica da guaraná sobre a cognição de voluntários idosos normais. Foram estudados 45 voluntários, sendo distribuídos aleatoriamente para um dos três grupos experimentais. Placebo (n=15), Cafeína (n=15) e Guaraná (n=15), em estado duplo-cego. Não obteve-se nenhuma mudança significativa na cognição desses voluntários.
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