You don't wanna accept cancer as answer then lets elaborate the effect.

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I'll choose Poverty , Why?

When you smoke you'll be getting sickness such as cancer or other related cases but in the end after having a Bad sickness you will be hospitalized , then your family will spend lots of money to keep you alive but in the end they will spent tons of amount yet you will die still , then because of those scenario the remaining family will suffer from poverty because of your medication .