John Nosta is an American critical thinker with a background in science and marketing, most notable for his work in the field of digital health. He is the founder of NostaLab, and from 2012 to 2014, he wrote a health- and technology-themed blog for Forbes called Health Critical. He is also a member of and strategic advisor to the Google Health Advisory Board and has given speeches at numerous conferences and events including TEDx, South by Southwest, and HealthXL. Nosta is also known as a medical influencer on social media, frequent being named as an account to Follow on Twitter.