[math-fun] how much life lost by being off the optimum weight curve?

I do not have that data, but presumably the life insurance companies that produced the "optimum weight range" data did. I just parasited off MetLife. Here are some other life insurance co tables somebody collected, I have no idea what if any science is behind them... but i we optimistically assume they knew what they were doing, then the extra premiums you had to pay from being off curve, translate into reduced lifespan in the obvious way...: http://www.victorson.com/pdf/LTC/HeightandWeightChart[1].pdf