'''Attention Deficit and Hyperactivity Disorder (ADHD)''' is a controversial diagnosed [[disease]] of adolescents that is characterized by lack of ability to focus on the task at hand, and often with a lack of ability to sit still. One cause is a lack of ''discipline.'' However, diet, lack of exercise, environmental factors, and genetic factors can be causal factors for attention problems and/or hyperactivity.<ref>[https://www.amazon.com/Healing-Hyperactive-Brain-Functional-Medicine/dp/0968510809/ref=sr_1_1?ie=UTF8&s=books&qid=1273311192&sr=1-1 Healing the hyperactive brain by Michael Lyons, M.D.]</ref> | '''Attention Deficit and Hyperactivity Disorder (ADHD)''' is a controversial diagnosed [[disease]] of adolescents that is characterized by lack of ability to focus on the task at hand, and often with a lack of ability to sit still. One cause is a lack of ''discipline.'' However, diet, lack of exercise, environmental factors, and genetic factors can be causal factors for attention problems and/or hyperactivity.<ref>[https://www.amazon.com/Healing-Hyperactive-Brain-Functional-Medicine/dp/0968510809/ref=sr_1_1?ie=UTF8&s=books&qid=1273311192&sr=1-1 Healing the hyperactive brain by Michael Lyons, M.D.]</ref> |