How Your Immune System Works & How to Improve It | Dr. Max Krummel

The immune system operates as a sophisticated, tunable sensory network that continuously monitors the body’s internal landscape rather than functioning solely as a static defense against foreign pathogens. As the body ages, it accumulates genetic mutations, transforming into a complex mosaic that challenges the immune system's ability to distinguish self from non-self, which contributes to the increased prevalence of cancer and chronic disease in later life. Beyond its role in fighting infection, the immune system is deeply integrated with other physiological processes; sleep facilitates essential systemic cleanup and repair, while the nervous system—specifically the insular cortex—can influence immune states through brain activity and memory recall. Understanding these intricate, bidirectional connections between immune function, cellular development, and systemic health is crucial for advancing targeted immunotherapies and improving overall longevity.