i need this answer for a project.
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It's a genetic disorder, though usually sporadic and therefore not caused by an inherited propensity, so you're born with it, though it's also progressive. Therefore, he never "got" it - he's always had it.
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As mentioned, it's progressive, and this doesn't put a year to it, but I believe he had early symptoms when he was a doctoral student.
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When he ate dOg feces