The Human Upgrade: Biohacking for Longevity & Performance

You've Been Getting Dumber Every Day Since You Turned 30 : 1454

49 snips
Apr 23, 2026
Dr. Tommy Wood, neuroscientist and physician who researches brain optimization, explains why cognitive decline is often self-inflicted. He covers arousal and flow for peak performance, the 3S model (Stimulus, Supply, Support) for long-term brain health, neurostimulation tools, exercise and movement benefits, the risks of constant low-level stimulation, and how to use AI without outsourcing your thinking.
Ask episode
AI Snips
Chapters
Books
Transcript
Episode notes
INSIGHT

Decline Is Not Inevitable

  • Cognitive decline is partly self-fulfilling due to societal expectations and reduced cognitive engagement after formal education.
  • Seattle Longitudinal Study shows most people maintain cognition into their 70s if they keep stimulating their brains.
ADVICE

Keep Alcohol Very Low For Brain Health

  • Limit alcohol to under ~0.5 UK drinks/day average or avoid regular intake to protect REM sleep and dementia risk.
  • Tommy Wood cites UK Biobank data linking >~one drink every few days to smaller brain volumes and higher dementia risk.
INSIGHT

ADHD Reflects Network Balance Variation

  • ADHD may reflect altered inhibitory/excitatory balance producing peaks and troughs of focus rather than constant hyperactivity.
  • Stimulants can normalize arousal in some ADHD brains but over-arouse others, worsening complex task performance.
Get the Snipd Podcast app to discover more snips from this episode
Get the app