I am a counter example or at least not part of your "most" group! My dad's birth mother died of TB in the early 1950s. TB doesn't always kill before you've ha

I am a counter example or at least not part of your "most" group! My dad's birth mother died of TB in the early 1950s. TB doesn't always kill before you've handed down your genes and it doesn't always kill either, nor does everyone contract it. By the way, she was a healthy, vigorous woman struck down in her prime. She lived in a reasonably affluent part of southern England, well away from the worst pollution but not too rural and the NHS was up and running. TB is a right bugger and can work very quickly. At least TB is mostly curable nowadays: https://www.nhs.uk/conditions/tuberculosis-tb/ https://www.nhs.uk/conditions/tuberculosis-tb/ When it comes to disease, do not let your guard down.