A complete nutritional composition comprising polyphenols is provided for reducing the symptoms of allergies originating from food allergens in young children or infants. Preferably the composition modulates the secondary prevention of allergies while not affecting significantly the primary prevention. The composition comprises an apple extract.COMPOSICIÓN NUTRICIONAL QUE COMPRENDE UN EXTRACTO DE MANZANA Y QUE REDUCE LOS SÍNTOMAS DE LA ALERGIA A LOS ALIMENTOS, EN ESPECIAL, EN NIÑOS.