Weider remained active "almost until the end, " even after being diagnosed 12 years ago with a heart condition, amyloidosis, said his publicist Charlotte Parker.

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Last month, the City of Pittsburgh hosted the 35th annual Great Race, a charity run that raises money for the Richard S. Caliguiri Amyloidosis Research Fund.

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The results were good, so he moved on to human trials, not for Alzheimer's disease but for a more rare disease called amyloidosis, in which SAP causes protein clumps to form elsewhere in the body, destroying organs and eventually killing the patients.

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