Earlier quoted context omitted.
Meanwhile, the average lifespan in the UK has shot from 46 years in 1900, when the primary heating and power source was coal, to 81 years now. It's easy to forget how much worse things were before.
This is right. The discovery of antibiotics and many other medical advances somehow influenced this, too, though.
Antibiotics weren't widespread until after WWII, as were most of the vaccines we currently consider standard.
Medicine as a whole is an astounding example of diminishing returns to innovation.