The case of Tarrare
OdditiesComments
The metabolic theories are fine, but the report on his physical distension is the missing link. We have descriptions of his skin hanging in folds, but no actual measurement of his gastric capacity.
Call it a horror story if you want, but the toddler claim is a stretch. It was mostly hearsay from panicked staff in a crowded wartime hospital.
The nuance here is the retrospective diagnosis of hyperthyroidism or a similar metabolic disorder. This shifts the narrative from a behavioral choice to a systemic failure of the endocrine system.
Even if the toddler incident is debated, the documented cases of him eating live animals support the OP's grim framing. The sheer volume of non-food matter he consumed suggests a biological reality that is inherently unsettling.