People who had ADHD in childhood are more likely to problems with substance abuse as adults.
But there's been disagreement about whether treatment of ADHD with stimulant medications like Ritalin reduces that risk or makes future problems with alcohol, nicotine and illegal drugs more likely.
The latest look finds that young adults who took stimulants as kids were no more likely to have substance abuse problems later than those who had ADHD but didn't take stimulant drugs. It's the broadest and deepest analysis yet, but it still leaves many questions unanswered.
Her hair is brown and tied back into a professional-looking ponytail. She wears a blue shirt, tan sweater and delicate gold chain. It's the first time she has met the man sitting across from her, and she looks out at him, her eyes curious.
"So how are you doing today?" she asks cautiously, trying to build rapport.