The Shawn Ryan Show #300 Louisa Nicola - Peptides, Cancer and the Deadly Habits That Lead to Alzheimer’s
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Apr 30, 2026 
Louisa Nicola, an Australian neurophysiologist and founder of Neuro Athletics, dives into Alzheimer’s risk, brain rot, and the habits that quietly fuel cognitive decline. She explores gamma wave tech, wearables, sleep, concussions, peptides, psychedelics, vaccines, creatine, and why exercise may be one of the most powerful tools for protecting the brain.
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Why Close Relationships Protect The Brain
- Louisa Nicola says the strongest long-term predictor of healthy brain aging may be the quality of close relationships, not just diet or exercise.
- She cites the 80-year Harvard study and argues trusted human bonds regulate stress while forcing rich cognitive engagement.
Why Lifting Weights Sends Repair Signals To The Brain
- Louisa Nicola argues resistance training may have the broadest brain benefits because contracting muscles releases myokines that act like repair signals.
- She says these messengers support synapses, hippocampal growth, immunity, amyloid clearance, and mitochondrial repair across organs.
Why She Warns Against Popular Recovery Peptides
- Louisa Nicola warns that popular gray-market peptides like BPC-157 lack human randomized trials and may promote blood vessel growth in unwanted places.
- Her main concern is that a healing peptide could also feed an undetected tumor by increasing vascularization.