That's true in a general sense, but has technologically improved household soap in particular contributed measurably to the reduction in mortality rates? There

That's true in a general sense, but has technologically improved household soap in particular contributed measurably to the reduction in mortality rates? There are large contributions from antibiotics, vaccines, the general improvement in living quarters, improved workplace-safety regulations... I could even believe things like more frequent laundering play a role. But I'd be surprised if changes in the composition of household soap have improved health.