Podbit · Huberman Lab
A rigorous human laboratory study by Dr. Helen Blair Simpson found that smoked cannabis — whether THC-dominant or CBD — had little acute effect on OCD symptoms and actually produced smaller anxiety reductions than placebo. The popular belief that cannabis helps OCD isn't supported by the data.
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At 29:22 · chapter starts 29:09
Huberman examines two treatments that generate significant public interest. First, cannabis: a human laboratory study by Dr. Blair Simpson found that smoked cannabis — whether THC-dominant or CBD — had little acute effect on OCD symptoms and, critically, produced smaller reductions in anxiety than placebo. This is a striking finding given widespread beliefs about cannabis as an anxiolytic. Second, transcranial magnetic stimulation: TMS coils applied non-invasively to motor and supplementary motor areas of the skull can interrupt the automatic quality of compulsive motor behaviors. Small-scale studies have shown reductions in OCD symptoms that persist after treatment ends. Huberman tempers enthusiasm by calling TMS promising rather than proven, and notes that the greatest excitement surrounds combinations of TMS with CBT or pharmacological treatment.
A human laboratory study found that smoked cannabis — whether THC-dominant or CBD — had little acute impact on OCD symptoms and produced smaller anxiety reductions than placebo.
Transcranial magnetic stimulation applied to motor and supplementary motor areas can interrupt compulsive motor behaviors and reduce OCD symptoms beyond the active treatment session.
Transcranial magnetic stimulation targeted at motor and supplementary motor areas can interrupt the automatic quality of compulsive behaviors, with symptom reductions persisting after the sessions end. TMS isn't a magic bullet, but its combination with CBT or drug treatment is generating real excitement.
Self-help fails because people are sold one universal cure by the hyper-responders who had a transformative result from it. The real problem is context: every method works for the right person at the right time, which is almost never you just because the author says so.
Spencer Greenberg was once so socially anxious his heart pounded just approaching a stranger. His therapist gave him homework: go to a bar alone, talk to 5 strangers. Starting with asking for the time, he worked up to asking men for hugs — and his anxiety fell dramatically in 6 months.
A person who flies regularly but obsessively checks weather forecasts before every flight is not doing exposure therapy — they're teaching their brain that flying is only safe with the ritual. Safety behaviors prevent the brain from ever learning that the feared thing is actually fine.
The worry-time technique assigns all worries to one scheduled slot (e.g. 5 PM). Every time a worry surfaces, you write it down and ban yourself from engaging with it until that time. When 5 PM arrives, most worries feel trivial and the act of batch-worrying exposes how little it actually accomplishes.
In a randomized study of 20 habit techniques, 'habit reflection' stood out: recall a past habit you successfully built, write down what helped you succeed, then apply those same strategies to your new habit. It works because it's self-adapting — it uses whatever worked for YOU.
The tiny habits technique — always having a minimal version of your habit you can do when life gets in the way — keeps the mental machinery of habit formation from breaking. Paradoxically, people given a tiny-habit fallback option were MORE successful at the full habit, not less.
Fears and worries act like playground bullies — they want to ambush you. But when you deliberately seek them out and choose the time of engagement, they lose their power. The volitional act of starting the fight on your own terms is one of CBT's most underappreciated insights.
Most downtime defaults are things you regret immediately after — phone scrolling, binge TV. 'Glad you did it' activities meet the same need for rest but leave you feeling like you spent your time well. The switch from a bad screen to a documentary, a book, or a walk costs almost no extra effort but compounds into identity over time.
You rarely control your first reactive thought. But you can train your second thought — the response to the trigger — by asking whether your initial reaction is the most helpful one and replacing it with something equally true but more constructive. Over time, that second thought becomes automatic.
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