I have long been discovering that much that I had once been taught about science or health is incorrect, or that the information was presented with a biased agenda.
This process started for me in the mid-1980s when I moved from being a molecular biology researcher to a nutrition and health researcher. I will never forget being interviewed on radio regarding my book about organic germanium, with an opposing 'expert' who stated that there was no research behind the published data regarding organic germanium's immune enhancing properties. This despite the more than 100 references to the published scientific literature, of which this 'expert' had obviously no knowledge.