> The word and concept of “hormone” only date back to 1905. Before that, what did we believe was regulating our bodies? This question seems to give too much im

> The word and concept of “hormone” only date back to 1905. Before that, what did we believe was regulating our bodies? This question seems to give too much importance to naming a thing, in terms of how much it means we understand that thing. It's not like before hormones were discovered we knew nothing about biochemistry. And even a hundred years later, there's still so much we don't understand.