In Doctor in the House Episode 1, Dr. Rangan Chatterjee lived with the D’Arcy family for one month to see how their habits affected their health. Mom Dottie liked fast food and unhealthy meals. She was diagnosed with type 2 diabetes. Dr. Rangan helped her eat less sugar and junk food. After the changes, she felt healthier and had more energy. Dad Russ was a firefighter, but he mostly worked at a desk and did not exercise enough. The doctor helped him become more active and improve his daily habits. After one month, Russ became healthier and fitter. Dr. Rangan saw that the whole family’s health was connected, so he helped them improve their eating, exercise, and sleep habits together. In the end, the family became healthier and learned the importance of a healthy lifestyle.