Wive's tales and home remedies still circulate because they often work. Of course, you're not going to read that on Hacker News because it's biased by people wearing modern American blinders that don't have the humility, courage, awareness or something else, to just try for themselves. I was that way until I tried psychedelics, meditation, pranayama breathing, lucid dreaming and many other alternative modalities just two years ago.
Scientific rigor is not just about gathering people as lab subjects, experimenting on them and publishing your findings in peer reviewed journals. In my experience, the strongest science, where the deepest knowledge arises, is by systematically performing experiments on yourself. This isn't possible for all things, but it's 100% available for fasting.
