I'm generally a "natural health freak" (rest of my family says), but I have also seen (and teachers in my family testify, too) the impact on productivity for ki

I'm generally a "natural health freak" (rest of my family says), but I have also seen (and teachers in my family testify, too) the impact on productivity for kids when on/off their meds (ritalin,etc). I'd also say it's not inconceivable that there could be a huge chunk of today's children who have ADHD - way larger than a generation or two ago. For a similar (though not as prevalent) phenomenon, look at how autism has been ramping up in recent decades.