Four passages from The Sardine Fast — the voice, the evidence, and the plain-spoken honesty you'll find across all 450 pages.
The metabolic emergency around us is not a willpower problem and it is not, for most people, a genetic destiny. It is a downstream symptom of a postwar dietary and lifestyle environment that has driven chronic hyperinsulinemia across whole populations — and fasting is one of a small number of physiological levers that can pull that signal back down without a pharmaceutical.
The cellular process Ohsumi pinned down — autophagy, literally 'self-eating' — is the one biological lever that is reliably engaged by going without food and very poorly engaged by almost any other intervention. The reader of this book can engage it with a clock, a glass of water, and patience.
I have watched a senior surgeon's continuous-glucose trace flatten out so far that he asked, in genuine puzzlement, whether the device was broken. It was not broken. His pancreas had finally been given a chance to rest.
You can trigger autophagy with about a hundred and fifty calories of pure protein and fat sitting in your stomach — provided those calories are not accompanied by the carbohydrates that would re-raise your insulin and shut autophagy back down. You can, in other words, fast smarter.