Circadian clock based "Rabbit-Tortoise Model for cancer cure" is Dr. Biswaroop Roy Chowdhury's 4th innovation in the field of Medical Engineering. His other innovations include "Zero Volt Therapy", Mathematical Model of nutrition, now hugely popular "the DIP diet" and the law of gravity and heat-based "GRAD system" for kidney patients. Dr. BRC is an engineering graduate with a post- graduation and PhD (Hon.) in Diabetes. He is the author of 25 books, and successfully runs the HIIMS group of hospitals with major activities in India and Vietnam.