Empowering the Public: Inside John Campbell’s YouTube Legacy on Medical Insight and Public Health Education From VHS to Viral Videos: How a Former Nurse Transformed Online Medical Content into a Trusted Platform for Public Health Awareness John Campbell, a retired nurse and educator, has garnered a global audience for his YouTube channel, dedicated to educating viewers on medical topics ranging from basic anatomy to complex health issues. With a career that started in nursing and expanded to academia, Campbell has effectively bridged the gap between medical professionals and the general public. In this article, we explore the evolution of his channel, the principles guiding his content, and the broader implications of his work in an era of rapid health misinformation. 1. The Evolution of a Medical Educator’s Platform [0:01 – 2:15] In 1990, John Campbell began teaching student nurses using VHS tapes, which evolved into DVDs and eventually YouTube videos by 2007. Initially, his cha...