I am very curious. The precise cause or causes of ADHD are not known.
New research offers hope in pinpointing an internal origin for the disorder.
A recent study suggests that true ADHD is related to a problem in brain metabolism. Researchers studied adults who had been hyperactive since childhood and who were parents of hyperactive children. They found reduced activity in those areas of the brain that control attention and movement. In the early 1970's Dr. Feingold proposed that much of the hyperactivity involved with learning disabilities could be attributed to food additives. This untested idea based on testimonials gained wide public acceptance.