Improve Focus with Behavioral Tools & Medication for ADHD | Dr. John Kruse

KEYPOINTS

• 01

  ADHD is defined by ordinary behaviors taken to a disruptive extreme

  The diagnosis rests on 18 symptoms, nine inattentive (losing items, failing to follow through, distractibility) and nine hyperactive-impulsive (interrupting, blurting, fidgeting). Adults need at least five, present to an excessive degree, causing distress or dysfunction, and showing up in multiple areas of life. Psychiatrist John Kruse notes the old belief that children outgrow it is wrong; most do not, and symptom severity fluctuates across adulthood.

• 02

  Strongly genetic, but highly sensitive to structure and demands

  Heritability is around 0.8, comparable to height. Kruse frames ADHD as an executive-function problem affecting working memory, selective attention, emotional regulation and impulse control, so the brain relies more on outside structure. Structure is a Goldilocks issue: assembly-line work is too rigid. Working from home during COVID cut structure while raising demands, a perfect storm for symptoms.

• 03

  Build the day around four essentials before any tasks

  Kruse asks patients to schedule sleep, regular meals, exercise or movement, and relaxation time first, framing the scheduler as a nurturing 'mother hen' rather than a taskmaster. Forgetting to eat is common enough that a patient saying 'it was 4 p.m. and I hadn't eaten' is a clue to him, possibly reflecting weaker attention to internal body signals.

• 04

  Sleep timing matters as much as sleep duration

  People with ADHD lean toward night-owl chronotypes, partly through over-represented genetic markers and partly through procrastination. Kruse, who did his PhD on circadian rhythms, says a late schedule such as 2 a.m. to 10 a.m. is fine if it is consistent. Paradoxically, stimulant medication helps many patients regularize sleep, perhaps through a daytime anchor or an evening wind-down.

• 05

  Most insomnia is an arousal system that will not switch off

  Kruse cites sleep research suggesting that in at least 90% of insomnia the sleep system is intact; the daytime wake system fails to disengage. So the goal is to remove arousal: plan a bedtime, avoid late exercise that raises body temperature, keep the phone out of the bedroom entirely, and recruit a partner for agreed-upon reminders that do not feel like nagging.

• 06

  Childhood stimulant treatment appears to lower addiction risk

  Roughly 20% of Americans develop a substance problem; for people with ADHD the rate is almost double, near 40%, and higher in men. Several large meta-analyses, though not every study, find that treating children with stimulants largely normalizes that risk, perhaps by reducing impulsivity and helping them absorb information about drugs.

• 07

  Amphetamines are the most effective medications; methylphenidate is closer to the rest

  Amphetamine blocks dopamine and norepinephrine reuptake and also forces larger release from vesicles. Kruse argues methylphenidate (Ritalin) mainly blocks reuptake, like bupropion, and its efficacy sits nearer non-stimulants such as atomoxetine and guanfacine. Unlike antidepressants, ADHD drugs show a more linear dose-response relationship.

• 08

  Amphetamine-induced psychosis is rare but serious

  Kruse puts the risk near 1 in 500, likely dose-dependent. Unlike alcohol intoxication, the paranoid, schizophrenia-like state can persist for weeks or months after stopping, and about 20% of affected people remain psychotic 20 years later. In his San Francisco practice the rate exceeded 1 in 100, which he links to HIV and methamphetamine histories. With any personal or family history of psychosis, including a cannabis-triggered episode, he would not prescribe an amphetamine.

• 09

  Cardiac risk is small for most people

  Stimulants raise heart rate and blood pressure a few points on average, with roughly 80% showing no change. Sudden death is tied to rare inherited conduction problems, usually flagged by family history or fainting. A recent meta-analysis following people up to 14 years found a statistically significant rise in cardiovascular risk, mostly in the first three years, but the absolute risk stayed very low. Kruse favors careful histories over routine EKGs for everyone.

• 10

  Non-stimulant options work differently

  Guanfacine, an alpha-2 agonist originally for blood pressure, appears to strengthen prefrontal synaptic connections (work associated with Amy Arnsten's lab at Yale) and takes two to four weeks. It is sedating, so Kruse uses cheap immediate-release doses at bedtime; it causes less rebound hypertension than clonidine when doses are missed. Modafinil and armodafinil promote wakefulness with less agitation, though 10 to 15% of people feel revved up for the first few days.