Facebook Starts Blocking Sensitive Medical Data Shared by Apps Over Privacy Concerns Data fed into a Facebook analytics tool by app makers included medical diagnoses and whether users were pregnant, said a report. By Agence France-Presse | Updated: 20 February 2021 12:12 IST The block list contains more than 70,000 terms, including diseases, bodily functions, medical conditions Highlights Flo Health app informed Facebook when a user logged starting her period The block list contains more than 70,000 terms Facebook has started blocking sensitive health information that third-party apps had been sharing with the social network in violation of its own rules, said New York officials who investigated the situation.