So I need drugs to slow my metabolism way down so I can live forever? DessertFox on FPH told me it was how  I can be immortal. Excuse me while I go chug chemicals to find one that slows my metabolism. By big caveat you mean major bonus right? Heres a miracle drug that will help you be not obese, BUT the more obese you are at the start the shorter your life will be after. Like divine punishment for letting themselves get fat.