
Record 034 · Metabolic · 1963
67%63.34.Q
Therapeutic Prolonged Fast
George Cahill
“Cahill's starvation-physiology work that made multi-day fasting a described metabolic protocol.”
Fuel succession — glycogen, then fat, then ketone-dominant brain — is why a 3–7 day fast is a protocol with stages, not a dare.
Mapped prolonged fasting as a staged method.
- Stage physiology of fasting
- Ketone brain fuel
- Multi-day clinical fasts
Days, not hours.



