Nothing, beans are ok, one of best sources of protein for plant-based diets. Biggest problem with soy is that 77% is consumed by animal agriculture, which is c

Nothing, beans are ok, one of best sources of protein for plant-based diets. Biggest problem with soy is that 77% is consumed by animal agriculture, which is causing much harm in the world (deforestation, pesticides/herbicides, runoff, biodiversity loss, co2 emissions, ...). https://ourworldindata.org/soy https://ourworldindata.org/soy