> I am personally dealing with colon cancer, and one of the incredibly annoying things about the awful disease is the number of truly clueless people who use it to advance some culinary agenda they believe in without evidence.

Sorry to hear this, and it's really a shame that whenever health and disease topics show up, every conspiracy theorist comes out from under their rock to try to explain their "theory" to you. Just look at the comment-trainwreck on this HN article. A significant percentage of the comments are "I have a theory that it's [....]" and it's always something mundane, untestable, and vaguely victim-blamey like diet.