evidence: On the Impossible Foods website for Burger King, the company openly admits that Impossible Whoppers are made "mostly" of soy protein, which we previously reported is a testosterone antagonist, especially in men. And according to Stangle – though we haven’t verified this in our own lab – the amount of soy protein and other estrogenic substances in Impossible Whoppers amounts to 44 milligrams (mg) of estrogen per burger, compared to just 2.5 nanograms of estrogen in regular beef. [Editor’s note: We believe this claim of 44 mg of estrogen in one Impossible Whopper is unlikely to be true. However, there is certainly some level of estrogen found in these fake meat patties, and we hope to be able to locate reputable lab tests that are reporting on the levels being found. We could theoretically run these tests in our own lab, but we are currently focused on glyphosate and other herbicides.] [...] The whole thing is an artificial disaster, even if Stangle’s 44 mg estrogen claim turns out to be exaggerated. He’s definitely right about one thing: Impossible Whoppers are not natural, nor are they preferable to real beef, especially grass-fed beef that’s much healthier than its feedlot-based counterparts.