This is the narrow, measurable core of Fletcherism and the part that holds. Fletcher claimed that chewing each mouthful thoroughly leads a person to eat less. It is classified with a surrogate endpoint: the quantity eaten is a measurable intermediate, not a hard health or mortality outcome. It is recorded as replicated because a controlled 2011 study found that a higher chew count (35 versus 10 chews per mouthful) reduced food intake (Smit et al., Appetite 2011), consistent with the satiety effect Fletcher described. The replication is important precisely for its limits: it confirms reduced intake, the surrogate, and says nothing about the disease-prevention and life-extension claims the doctrine built on top of it. A real effect on a surrogate was the kernel of plausibility around which the unsupported claims grew.