No,  gangrene is a reality for pigs with beetus. For some, a beetus DX is a wake up call and they sort their shit out (a tiny majority though, not many at all). Others, not so.  They have a higher chance of getting it cos their blood is rammed with glucose and bacteria loves that. The meds aren't to blame, it's because they're fat and they're lazy and they cannot be arsed fixing their pathetic lives.