“…It is a nosological entity that is associated to delayed cognitive and psychomotor development 3 , changes in growth and development, mood swings, lower exercise tolerance [4][5][6] , fatigue, difficulty in concentration, which can impair the learning capabilities of children and adolescents. In turn, this deficiency condition can cause the impairment of cellular immunity, induce reduced appetite, and lead to perverse eating behavior, headaches, dizziness, pale complexion and mucosa, and gastrointestinal disorders and, even, signs of heart failure 5.6 .…”