Fair enough, however I'd want to review those studies to see what similarities do exist - even if in different households/environments. Studies that aren't taki

Fair enough, however I'd want to review those studies to see what similarities do exist - even if in different households/environments. Studies that aren't taking into account the relative general lack of health of people in many parts of the world needs to be addressed, accounted for, in research as well. I do understand how some makeups could allow a large amount of people to certainly to be prone to environmental stresses, have a more fragile-sensitive system - and if those factors are allowed to continue say for decades, there will be a hardening.