A new book questions the current levels of ADHD diagnosis and posits that there's an over-reliance on drugs to treat it when diagnosis is accurate

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Influential patient-advocacy groups insist that only now is the true prevalence of A.D.H.D. finally being recognized after being drastically underestimated....But Schwarz makes a convincing case that the radical expansion and promotion of A.D.H.D. has resulted in the label being applied in ways that are far beyond the needs of a historically underserved community, while nonpharmaceutical methods of treatment like cognitive behavioral therapy (which have been proved to complement the effectiveness of medication) are overlooked.

and

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...he depicts pediatricians’ waiting rooms snowed under with pharma-funded brochures, parents clamoring to turn their allegedly underachieving children into academic superstars and kids showered with pills whose long-term effects on the developing brain (particularly when taken in combination) are still barely understood.

I've definitely seen the waiting room ads (pens, clipboards, note paper, etc). I even remember sitting in an exam room once and noticing that the foot supports on the exam bed had little covers on them --- advertising some drug or another.