The effects of micronutrient interventions on other domains were inconsistent .
Improvement in fluid intelligence among micronutrient-deficient children was consistently reported .
BACKGROUND & AIMS Micronutrients are essential for brain development with deficiencies in specific nutrients linked to impaired cognitive function .
Interventions are shown to be beneficial to children 's mental development , particularly in subjects who were micronutrient-deficient at baseline but results on healthy subjects remain inconsistent .
This systematic review evaluated the effect of micronutrient inventions on different cognitive domains .
Decreased parasite load and improved cognitive outcomes caused by deworming and consumption of multi-micronutrient fortified biscuits in rural Vietnamese schoolchildren.
Micronutrient deficiencies are associated with impaired growth and cognitive  function  . A school-based fortification program might benefit schoolchildren but a high prevalence of parasite infestation might affect effectiveness . A r and omized , double-blind , placebo-controlled 2 × 2 factorial trial was conducted to assess the efficacy of multi-micronutrient fortified biscuits with or without de-worming on growth , cognitive function , and parasite load in Vietnamese schoolchildren . Schoolchildren ( n = 510 ) , 6 - 8 years of age were r and omly allocated to receive albendazole or placebo at baseline and four months of multi-micronutrient fortified biscuits ( FB ) or non-fortified biscuits .  Children receiving FB for four months scored higher on two cognitive tests : Raven 's Colored Progressive Matrices and the Digit Span Forward test . Children receiving albendazole plus FB had the lowest parasite load after four months . In children receiving FB , mid-upper arm circumference was slightly improved ( + 0.082 cm ) but there were no differences in other indexes of anthropometry . Combining multi-micronutrient fortified biscuits with de-worming is an effective strategy
The effects of micronutrient interventions on other domains were inconsistent .
Improvement in fluid intelligence among micronutrient-deficient children was consistently reported .
BACKGROUND & AIMS Micronutrients are essential for brain development with deficiencies in specific nutrients linked to impaired cognitive function .
Interventions are shown to be beneficial to children 's mental development , particularly in subjects who were micronutrient-deficient at baseline but results on healthy subjects remain inconsistent .
This systematic review evaluated the effect of micronutrient inventions on different cognitive domains .