Inattention, impulsivity, and hyperactivity are key signs of ADD/ADHD (attention deficit disorder/attention deficit hyperactivity disorder). This condition is most commonly diagnosed in young children and can continue on through adolescence and adulthood. Research shows children with ADD/ADHD have significantly higher gastrointestinal tract disorders, and have increased intestinal permeability which can lead to the accumulations of toxins such as heavy metals, in particular mercury and other undigested proteins. Proper nutritional support may help your child to learn, focus, and get along better with others.