All statistics are dehumanizing. I'm no data scientist but I'd imagine including the whole human when doing statistics would produce a pretty low signal to noise ratio.
Health is very personal. Family history is usually pretty relevant. I am not sure what we gain by pretending we arent talking about actual people, or that by removing your name from all your specific health details it somehow means you cant still be personally targeted. I know Google gains the benefits of less regulations, though.