Dr. Satchin Panda: Intermittent Fasting to Improve Health, Cognition & Longevity

One of the most widely heard conversations on circadian rhythm and eating windows, and for many listeners the entry point to the whole field. Andrew Huberman takes Dr Panda systematically through the mechanics of the clock: the pacemaker in the hypothalamus, the separate clocks running in the liver, gut, muscle and immune system, and the cues that keep the whole set aligned.

The pivotal result gets proper attention, which is the finding that the liver clock follows when an animal eats, not when its eyes see light. That reframed food timing as a circadian input rather than a nutritional detail, and led to time-restricted feeding studies in which animals eating the same calories inside a consistent window were protected against disease that affected animals eating around the clock. Independent work has since shown that time-restricted feeding with the right nutrition can extend lifespan in animals.

From there the conversation moves to people. How eating windows affect metabolism, energy and cognition, what the human trial evidence does and does not support, and the particular bind faced by shift workers whose schedules are set against their own biology.