Eli Lilly sells a drug (Zyprexa) that can cause diabetes and then turn a profit on the drugs that treat the condition that they may have caused in the first place!

Eli Lilly has made $38 billion on Zyprexa and it was way oversold and caused diabetes and in some cases sudden death.
Eli Lilly has received a huge criminal fine over their Zyprexa cash cow,add it all up comes to $4.6 billion, in Zyprexa settlements,fines,litigation.
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Daniel Haszard Zyprexa whistle-blower

WARNING-
If a drug (Zyprexa) lists anything about the pancreas among the side effects, it probably means it can cause diabetes.
Unlike your liver, the pancreas does not regenerate itself. If it gets damaged, diabetes is very likely.