Seriously. What if we applied the same fatlogic to something inanimate, like our cars? Customer - "Does my car need any oil added or an oil change?" Mechanic - "No, your car is healthy at all levels of oil. I'm sure it'll be just fine." That engine seizing from a lack of oil is no different from a fatty's heart exploding due to a poor diet and no exercise. The only difference is you believe your mechanic when they tell you that your engine needs oil.