What Is Homeostasis? How Your Body Adapts, Regulates, and Stays in Balance

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In this thought-provoking conversation, Ruth Lorensson and Thomas Pals welcome back Scott Turner, author of Purpose and Desire, to explore the fascinating intersections of niche construction theory, homeostasis, and human wellness. Together, they unpack how living systems—down to the cellular level—act with agency, intentionally shaping and being shaped by their environments.

From Walter Cannon’s classic definition of homeostasis to Aristotle’s ideas on purposefulness, the discussion bridges evolutionary biology, biophysics, and wellness science. Scott Turner explains why adaptation is more than mechanistic feedback loops—it’s about purposeful striving at every level, from microbiomes to ecosystems. The trio dives deep into the “many little lives” metaphor, revealing how cellular conversations influence our overall health, vitality, and resilience—and how disruption in those conversations can lead to illness, cancer, and even addiction.

Key topics include:

• The agency of living systems and its role in adaptation and wellness
• How niche construction theory challenges modern Darwinism
• Why homeostasis is misunderstood and how it truly operates
• The parallels between ecosystem health and human health
• The role of interoception in restoring balance and fostering well-being

Whether you’re a wellness professional, leader, or simply curious about the science of thriving, this episode offers a fresh lens on what it means to be well—and how to consciously participate in the adaptive conversations that sustain life.

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