TL;DR in quotes:<p>> <i>an announcement from the World Health Organization that “processed meats” were now classified as a group 1 carcinogen, meaning scientists were certain that there was “sufficient” evidence that they caused cancer, particularly colon cancer. The warning applied not just to British bacon but to Italian salami, Spanish chorizo, German bratwurst and myriad other foods.</i><p>> <i>The WHO announcement came on advice from 22 cancer experts from 10 countries, who reviewed more than 400 studies on processed meat covering epidemiological data from hundreds of thousands of people.</i><p>> <i>The part of the story we haven’t been told – including by the WHO – is that there were always other ways to manufacture these products that would make them significantly less carcinogenic.</i><p>> <i>The pinkness of bacon – or cooked ham, or salami – is a sign that it has been treated with chemicals, more specifically with nitrates and nitrites. It is the use of these chemicals that is widely believed to be the reason why “processed meat” is much more carcinogenic than unprocessed meat.</i><p>> <i>The health risk of bacon is largely to do with two food additives: potassium nitrate (also known as saltpetre) and sodium nitrite. It is these that give salamis, bacons and cooked hams their alluring pink colour. Saltpetre – sometimes called sal prunella – has been used in some recipes for salted meats since ancient times.</i><p>The idea that nitrates are the reason processed meats are carcinogenic seems to be mainly taken from a recent book by a French journalist; not much in the way of links to scientific research. Would be nice to see some links along this line. The WHO recommendations are pretty incontrovertible however.