In 1936, the Hungarian endocrinologist Hans Selye injected rats with a hormone from cow’s ovaries. Things did not go well.  The lab rats developed bleeding ulcers.  

Next, Hans injected the rats with a salt solution and a hormone isolated from a cow’s placenta. The rats developed the same symptoms.  Next up was an injection made from kidneys and spleens, Kelly McGonigal writes in her book The Upside of Stress.  

Same … continue reading