Persistent Low Energy
A sustained, significant reduction in energy levels that persists over an extended period and does not resolve with adequate rest. Distinguished from fatigue by its duration and resistance to conventional recovery strategies.
Quick answer
Persistent low energy (ICD-10: R53; ICD-11: MG22) is a high-prevalence symptom with multiple reversible causes including anaemia, hypothyroidism, and nutritional deficiency. ME/CFS requires pacing rather than exercise. Adaptogens and nutritional correction have evidence. Post-exertional worsening is a key differentiator.
Recognition
Do any of these feel familiar?
Chronically low physical and mental energy across all daily activities
Waking without refreshment regardless of sleep duration
Energy that depletes rapidly even with minimal exertion
Reliance on caffeine or stimulants to maintain minimal function
Sense that the body's reserves are permanently low
What is Persistent Low Energy?
A sustained, significant reduction in energy levels that persists over an extended period and does not resolve with adequate rest. Distinguished from fatigue by its duration and resistance to conventional recovery strategies.
Approaches Commonly Explored
Commonly explored for conditions related to Persistent Low Energy, grouped by mechanism — select your subtype above to highlight the most relevant path.
How to use these approaches
Most people begin with Stabilise approaches, then progress toward Resolve and Sustain.
Energy production, nutrient metabolism, and cellular function.
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