Dr. Karan Rajan is a doctor, health educator, keynote speaker, and bestselling author of “This May Save Your Life”. With over 11 million followers across social media, he has become one of the world’s most trusted voices in gut and general health education.

A graduate of Imperial College London, Dr. Rajan spent over a decade as a doctor & surgeon, and in 2020, he began using his platforms to make medical science more accessible, sharing practical, evidence-based insights, along with his own gut health journey.

His signature blend of medical expertise and myth-busting has earned him global recognition, including multiple awards, high-profile media features, and ambassador roles with the United Nations and the World Health Organization. Dr. Rajan has advocated for public health causes across multiple leaders at 10 Downing Street, including Prime Minister Rishi Sunak on creating a smoke-free generation, and Prime Minister Keir Starmer on improvements to the NHS.

In 2025, following years of searching for a prebiotic fiber supplement and finding nothing satisfactory, Dr. Rajan engineered his own, launching LOAM – a biotechnology company dedicated to developing the next generation of microbiome support.

For more information, visit drkaranrajan.com.