I've gotta step in here, guys.
I'm definitely for the "natural" way, myself - have been studying and using alternative/nutritional/herbal meds for about 20 years now.
I discussed my chubby kid on the diet board - how we put him on the Carbohydrate Addicted Kids diet. Not only did he slim down to gorgeous in two months, but he CALMED DOWN considerably. I had been terrified he would end up on Ritalin for two years. Stubborn, overactive, bad attitude, never listened, never paid attention, etc. He was a hellion!
I figured that eventually when he got into the public school system it would be Ritalin, exorcism or both.
I put him on the most liberal form of the CAD kid diet and he became an absolute ANGEL. NOT a zombie - a great, calm, self-determined kid. Considerate, interactive (instead of reactive or in his own little world) and paying attention to his surroundings.
I also discovered that he absolutely CRAVED fish - tuna, sardines, anything that swims. We upped his consumption of fish and he was able to tolerate more carbs and still be calm. To this day (he's 8) he loves and craves and needs fish. We let him eat as much as he wants. His favorite treat is just tuna w/mayo in a bowl. Somehow, he knows he needs it.
Here's a good link to Omega 3's and ADD.
http://borntoexplore.org/omega.htm
So, Omega 3's and Carb restriction (especially sugar) should help a lot. Both of them together seemed to put my little guy on track again.
Actually, I'm glad you mentioned it, because we've been a bit lazy about it, and we need to tweak his diet again. I can only apologize to the poor kid for the crappy DNA and try to make it right.
Fawn