I once read that the significant growth of life expectancy could be attributed to lowering rate of child mortality, and that life expectancy for adults has chan

I once read that the significant growth of life expectancy could be attributed to lowering rate of child mortality, and that life expectancy for adults has changed less dramatically. If that’s the case, the point that overall life expectancy going from 47 to 72 affected the “grandmother window” is probably inaccurate.