evidence: Dr. Stangle cautioned that Impossible’s meat substitute, which debuted in the spring of 2019 and started earning contracts with fast-food joints across America later on in the year, contained "18 million times as much estrogen as a regular whopper." He reasoned that eating four Impossible Burgers a day was enough to "grow boobs on a male." Dr. Stangle’s conclusion appeared in headlines all across the internet, then broke Facebook’s algorithm, because of course it did. There was only one problem: it wasn’t true. Writers from The Atlantic, The Washington Post and even Fox News were all quick to point out that the soy in Impossible meat does not include estrogen as we’re familiar with it (a mammalian hormone), but phytoestrogen, a compound found in plants. Nations that top the charts in soy consumption, which are mostly Asian, have not reported gynecomastia (the swelling of male breast tissue) at heightened clips. Meanwhile, the link between soy isoflavones and a reduction in testosterone has proven dubious in clinical research. If overdosing on soy phytoestrogen does wacky things to the male body, science just hasn’t seen it yet. In fact, soy-rich diets have actually been connected with improvements in heart health and blood pressure.