Metabolism as a Health Model

In Kate Deering's How to Heal Your Metabolism, health is defined less as weight, lab normality, or visible fitness and more as a high cellular energy state. A well-functioning metabolism should produce warmth, good digestion, restorative sleep, clear mood, adequate libido, fertility, immunity, and resilient body composition.

Markers Deering uses

• Morning and daytime body temperature, aiming roughly towards 97.8–98.6°F.
• Resting pulse, often framed as roughly 75–90 bpm.
• Warm hands and feet.
• Regular bowel movements.
• Stable energy, appetite, mood, and sleep.
• Good libido, menstrual/hormonal health, hair, skin, nails, digestion, and immunity.

Mental model

The model treats the body like an energy economy. When thyroid-led energy production is strong, the body can repair, digest, reproduce, sleep, and tolerate stress. When energy production is weak, the body compensates with adrenaline and cortisol, producing short-term functionality but long-term fragility.

How to use this page

This is a useful self-observation lens, not a diagnostic system. Temperature, pulse, sleep, stool, mood, and food tolerance can reveal patterns that a single lab value misses, but they are affected by infection, medication, anxiety, menstrual cycle, fitness, caffeine, hydration, and environment.