Dr Karan Rajan is a medical doctor, Sunday Times bestselling author, and one of the biggest health and science creators on social media. Recognised by over 12 million followers across his platforms, he is a leading voice in evidence-based health education. Since 2020, he has become renowned for his refreshingly frank medical myth-busting videos, which uniquely combine education and entertainment.

Dedicated to addressing critical topics such as gut health, brain health, and healthy lifestyle choices, Dr. Rajan actively extends his expertise beyond social media. He currently serves as the Chief of Science at Throne Science and is the Founder of LOAM Science, where he is advancing gut health through microbiome innovation and research. He is also the host of the popular weekly podcasts Dr Karan and Dr Karan Explores.