Sam Miller Science

S 828: How Your Body Controls Hormones and Blood Sugar: The Science of Hormone Systems Explained

Aug 13, 2025
Dive into the fascinating world of the endocrine system and discover how negative feedback loops regulate hormones and blood sugar. Real-life examples clarify these complex mechanisms, demonstrating their impact on fitness and metabolic health. Learn unique insights about adrenaline, metabolic adaptation, and the body's thermostat function. This lively discussion not only educates but also connects science to effective coaching strategies.
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INSIGHT

Core Negative Feedback Architecture

  • Negative feedback loops keep physiological variables within a target window by using sensors, a control center, and effectors.
  • This system applies broadly to hormones, temperature, blood sugar and many homeostatic processes.
ANECDOTE

Working Out In Heat Example

  • Sam Miller uses working out outside in heat to illustrate temperature regulation via sensors and sweat glands.
  • The brain's temperature center senses excess heat then activates sweating to cool the body.
INSIGHT

Blood Sugar As A Feedback System

  • Pancreatic beta cells detect high blood glucose and release insulin to drive uptake into muscle, fat and liver.
  • As glucose falls, negative feedback reduces insulin to prevent hypoglycemia and maintain the target range.
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