biostudies-literatureUnknown12(6)Hawke BStem Cell NetworkProviders capitalize on patient testimonials to market unproven stem cell treatments (SCTs). We evaluated 159 YouTube videos and found patients discussed health improvements (91.2%), praised providers (53.5%), and recommended SCTs (28.9%). In over a third of the videos, providers posed questions to patients, thereby directing narratives and making them a powerful marketing tool.Stem cell reports1186-1189https://www.ebi.ac.uk/biostudies/studies/S-EPMC6565870biostudies-literatureHow to Peddle Hope: An Analysis of YouTube Patient Testimonials of Unproven Stem Cell Treatments.PMC6565870Paciulli DCaulfield TZarzeczny AMaster ZHawke BPrzybylo ARfalseHow to Peddle Hope: An Analysis of YouTube Patient Testimonials of Unproven Stem Cell Treatments.Providers capitalize on patient testimonials to market unproven stem cell treatments (SCTs). We evaluated 159 YouTube videos and found patients discussed health improvements (91.2%), praised providers (53.5%), and recommended SCTs (28.9%). In over a third of the videos, providers posed questions to patients, thereby directing narratives and making them a powerful marketing tool.2019-01-01T00:00:00Z2019 Jun2025-04-26T06:12:06.211Z2019-07-24T07:17:35ZS-EPMC65658703118909210.1016/j.stemcr.2019.05.009