Can Psychedelics Reset a Depressed Brain?

Can Psychedelics Reset a Depressed Brain?

Can psilocybin treat depression within a day? In this episode, Dr Karan Rajan sits down with psychedelic researcher Dr Rayyan Zafar to break down the science of psilocybin, treatment-resistant depression, brain scans, microdosing, and whether psychedelic therapy could become a real part of mainstream mental health care.
They explore why current antidepressants do not work for everyone, how psychedelics may affect the brain differently, what researchers are seeing on scans after a single dose, and why the conversation around psychedelic therapy is far more nuanced than internet hype suggests.
In this episode:

  • Why psychiatry needs new tools for depression
  • Why SSRIs do not work for everyone
  • How psilocybin interacts with serotonin receptors
  • The idea of a “plastic window” after psychedelic therapy
  • Whether psychedelics could help healthy people, not just patients
  • What the evidence says about microdosing
  • The real safety questions around psychedelic treatment
  • DMT, short-acting psychedelics, and where the field may go next


00:00 - Welcome Dr Rayyan Zafar
04:35 - How psychedelics work in the brain
07:29 - Psychedelics, culture and meaning-making
08:21 - What counts as treatment-resistant depression?
15:26 - Could psychedelics become preventative medicine?
17:20 - Depression, rumination and the default mode network
20:37 - The “plastic window” and why therapy matters
26:09 - The truth about Microdosing
33:20 - Safety, screening and who should avoid psychedelics
42:04 - DMT, ayahuasca and future treatments
44:04 - Why short-acting psychedelics matter
About Dr Karan:
Dr. Karan Rajan is a doctor, author, and educator dedicated to making health and medical science accessible to all. Through evidence-based analysis, he addresses topics such as gut health, brain health, and healthy lifestyle choices, while dispelling common medical myths with a touch of dark humor.

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#Psilocybin #MentalHealth #Neuroscience #PsychedelicTherapy #healthpodcast

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