Andrew Huberman (solo): Professor of neurobiology and ophthalmology at Stanford School of Medicine and host of the Huberman Lab podcast. This is a solo Essentials episode with no guest.
What this episode covers
In this Huberman Lab Essentials episode, Andrew Huberman explains what major depression is, its symptoms, and the underlying biology. He covers the roles of norepinephrine, dopamine, and serotonin, how antidepressants like tricyclics, MAO inhibitors, and SSRIs work, and how hormones, stress, genetics, and inflammation contribute to depression. He then reviews behavioral and supplement-based tools, including cold exposure, exercise, EPA omega-3s, and creatine, plus emerging clinical treatments like ketamine, psilocybin, and the ketogenic diet.
Recommended on this episode
EPA omega-3 fatty acids (fish oil / krill oil)
various
“getting above a thousand milligrams, and probably even closer to 2,000 milligrams per day of EPAs, can be beneficial for mood”— Andrew Huberman
Also referenced (named, not recommended)
Creatine monohydrate
various
“creatine supplementation seems to either lower the required dose of SSRI that's required to treat depression, or it can improve the effectiveness of a given dose”— Andrew Huberman
Prozac (fluoxetine)
Eli Lilly
“some of those drugs include things like Prozac or Zoloft, the more typical or generic names are things like Fluoxetine”— Andrew Huberman
Zoloft (sertraline)
Pfizer
“some of those drugs include things like Prozac or Zoloft, the more typical or generic names are things like Fluoxetine”— Andrew Huberman
Big reveals from this episode
- Major depression impacts roughly 5% of the population and is the number four cause of disability.
- A 9:00 PM peak in cortisol is described as a physiological signature of depressive-like states.
- Huberman frames much of major depression as driven by excessive, unchecked inflammation.
- He says he was surprised to learn creatine can help treat mood disorders; a 2012 American Journal of Psychiatry trial found it augmented SSRI response in women.
- A 2021 JAMA Psychiatry trial found 50 to 70% of subjects got significant relief from psilocybin-assisted therapy.
- The ketogenic diet shows decent evidence for helping treatment-refractory depression by raising GABA activity.
Worth remembering
- Anti-self confabulation: depressed people generate self-deprecating stories about themselves that don't match reality.
- Early-morning waking (3-5 AM) with inability to fall back asleep is a hallmark vegetative symptom of depression.
- SSRIs raise serotonin efficacy almost immediately, yet symptom relief usually takes about two weeks to appear.
- About a third of people who take SSRIs derive no benefit from them.
- If one identical twin has major depression, the other has about a 50% probability; the closer the relation, the higher the risk.
- About 1,000 mg of EPA per day appears to be the threshold for benefit, and it can lower the effective dose of SSRIs.
- Inflammation diverts tryptophan away from serotonin into kynurenine and the neurotoxin quinolinic acid, which is pro-depressive.
- Aerobic and resistance exercise shuttle kynurenine into muscle, protecting against this pro-depression pathway.