Publicado en "JAMA", el estudio ha sido realizado por médicos del Stroke Research Center de la Universidad de Wake Forest (Estados Unidos), y concluye que la administración de altas dosis de ácido fólico y vitaminas B6 y B12 ejercen un efecto protector similar frente a un segundo ictus que las bajas dosis de las mismas vitaminas, por lo que los autores escriben que la terapia de vitaminas a dosis elevados no tienen ningún efecto sobre la prevención del ictus, los episodios coronarios ni con el riesgo de muerte.
En la investigación, llamada VISP (Vitamin Intervention for Stroke Prevention), participaron 3.680 adultos que habían experimentado previamente un ictus no debilitante. La mitad fue asignada aleatoriamente al grupo de altas dosis y la otra mitad al de bajas dosis. La tasa de nuevos ictus fue del 8,4% en el primer grupo y del 8,1% en el segundo.
Webs Relacionadas
Wake Forest University Baptist Medical Center
http://www.wfubmc.edu/research/vascular.html/
JAMA
http://jama.ama-assn.org/
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