An Israeli startup has launched an online platform where people suffering from chronic diseases can share information to learn which treatments work best for their specific condition, based on the experience of their peers. The crowdsourcing site is appropriately called StuffThatWorks.

https://www.calcalistech.com/ctech/articles/0,7340,L-3841285,00.html

https://www.stuffthatworks.health/

https://stuff.health/s/1SaJPrvA  (personal survey for specific conditions)