The last time I did much thinking about child psych was three or four years ago, when I had a class with a very well-respected prof in the field. His contention was that ADHD was not overdiagnosed in the population as a whole. Estimates were that about 5% of kids had ADHD symptoms to the degree that they could benefit from medication, and about 5% of kids were on medication at that time. Trouble is, they weren’t the same kids. Among middle- to upper-class white boys, it was very liberally diagnosed, less so among white girls and boys from minority groups, and practically unheard of in minority girls.
Of course, there are plenty of parents out there in the “we’ve tried nothing, and we’re all out of ideas!” camp, who will inquire about ADHD rather than trying to impose any structure. And yes, docs will usually err on the side of prescribing the medication–but why shouldn’t they? Side effects are generally mild and self-limiting, so the downside of treating those who will not benefit is minimal. Those people can simply stop the medication and/or try something else. Those who do benefit–well, they benefit. From a game theory standpoint, it makes sense to err on the side of a medication trial.
The “diagnosis by therapeutic trial” is not unheard of. My most common example is GERD; if you have heartburn symptoms that sound attributable to GERD but not quite classic, I can send you for expensive tests, or I can try you on Pepcid or Prilosec for a month. If you get better, you get better; if not, we try something else.
What about diet? Studies like this one suggest that the link between sugar and hyperactivity in kids is not well-established. Caffeine can, of course, cause some hyperactivity, but it also stimulates some of the same areas of the brain as Ritalin, and can thus be beneficial in the same way. Indeed, many adults with untreated ADHD self-medicate with massive quantities of coffee. (I certainly did.)
Can exercise help? Well, I’m not about to start telling my patients to exercise less. If nothing else, exercise improves sleep, which makes anyone feel more alert, ADHD or not.
The bottom line, though, is that two things are necessary to treat ADHD (in the words of a psychologist I’ve worked with): 1.) structure, structure, structure, and 2.) taking the damn medication. Either of those things without the other will help some, but not nearly so much as the combination. It does a disservice to a kid to put him on medication that doesn’t help (or helps marginally) without making any other changes, but it does an equal disservice to a kid to put him on a Feingold diet and make him do laps around the yard every night when Ritalin would be vastly more effective.
Dr. J