maybe it's me but this rise of ADD, ADDHD, and a lot of other disorders seem to have come from environmental changes that are becoming part of daily life and so go un-noticed. Lack of windows in new schools, with the energy savings explanation but removes a lot of visual stimulation, lack of recess for younger kids and removal of gym classes for older kids resulting in little to no exercise and lack of physical interaction and learning to work as a team, a proliferation of junk food full of preservatives and chemical additives because 2 income families find it easier than cooking and washing dishes despite increasing allergies and reactions, using electronics as a babysitter from the time a child is able to function and giving 2 and 3 year olds video stimulation to keep them quiet instead of reading to them and playing with them thereby inhibiting communication skills development and no responsibility for kids such as even menial chores because the kids get upset when you take the electronic stimulation away and make them do something. Just go to a restaurant and look at a family with kids eating and see how many kids are hooked onto a phone and not talking at all, no response to an adult telling them thanks for coming in. I think today's way of raising the kids is causing enormous problems and the cause of 15-25% of our kids now being on mind altering and mood swing drugs to "help" them.
Just my opinion