That’s the funny thing about medicine… Lots of medical advice is largely determined by where you live. In America, doctors tell pregnant women to avoid eating too much fish. In Japan, doctors tell pregnant women to eat more fish.

they still do that, and using endangered animals and plants. one example is the cordyceps that affect caterpillars in the steppes, they harvested so much that it so much that they couldnt sustain the demand, because its a complex lifecycle for the fungi and caterpillar.