At every calorie level above starvation, there is an equilibrium weight associated. (Metabolism (which drops with less weight) + Exercise - Intake) -> over tim

At every calorie level above starvation, there is an equilibrium weight associated. (Metabolism (which drops with less weight) + Exercise - Intake) -> over time -> equilibrium weight. So assuming you pick a low calorie diet for now, eventually you'd maintain at a skinny weight.. and maybe live longer. Maybe.