2006k-874 animalfeed animalnutrition childnutritionalphysiologicalphenomena congresses control dietaryfats essentialfattyacidsinhumannutrition evidence-basedmedicine fattyacids fattyacidsinhumannutrition food fortified healthaspects history maternalnutritionalphysiologicalphenomena mentaldisorders methods nutritionalphysiologicalphenomena omega-3fattyacids physiologicaleffect prevention research therapeuticuse unsaturated wb425 wb425a457q2006