PETA roasts Impossible Burger for rat tests, suggests patties cause cancer

In a blistering blog post, PETA claimed the testing was “voluntary” and that Impossible Foods conducted the test after “disregarding advice from a PETA scientist who said that there’s no need to hurt and kill animals to test its burger.” To further scorch the burger’s name, PETA made the dubious suggestion that the burger could increase risks of cancer in consumers.

Researchers have indeed linked excessive iron (aka iron overloads) to risks of cancer. But it seems rather implausible to achieve such levels by simply eating an Impossible Burger, or a hundred. For one thing, healthy people typically don't accumulate excessive levels of iron.