That's what I mean by very small harm - hard to isolate from other factors, so no really relevant to individuals' lives. Disabilities can obviously be treated t

That's what I mean by very small harm - hard to isolate from other factors, so no really relevant to individuals' lives. Disabilities can obviously be treated the same way - we don't have an epidemic of blindness. Maybe it's coming when all those plastic-bottle-using-mothers'-babies reach 80 years old, but the chance of anything dramatic happening is shrinking as time goes by.