Have that last piece of pizza. You know you want to, and anyway, medical science tells us it might even be good for you. People who are a little overweight—pleasantly plump, perhaps—have the greatest protection against a range of chronic health problems and could even live longer, we've been told.
It's known as the obesity paradox. According to BMI (body-mass index) measures, obesity is defined as any score over 30. But those who are merely overweight—with a BMI of 25 to 29.9— are at the lowest risk of an early death, so it seems as if that little bit of fat around the middle helps you live longer.
