[alphaoverlord]

For the uninitiated, could you explain the difference?

[dahart]

Sure, life expectancy is the average age at death for all people, and longevity is the average age at which people die of old age.

Death by car crash, for example, affects life expectancy heavily, but doesn't contribute to longevity at all.

All accidental deaths & infant mortality lower life expectancy but not longevity.

[LifeExpectancy]

I was just a reader so far but I had to register now. As someone who works full-time in this field: - You are right about the definition of life expectancy. - I have never ever heard this definition of longevity. It is sometimes used as a synonym for life expectancy. - No one dies of old age.

[Nomentatus]

"life expectancy is the average age at death for all people, and longevity is the average age at which people die of old age."

Which matters if the accident rate is steeply increasing (only, surely) since it's at a historical low. Is your argument that opiods have accomplished this?

[bonzini]

Isn't that mostly accounted by using the median instead of the average?