People diagnosed with hyperthyroidism often have reduced ability to perform daily activities and lower quality of life scores, with about one in five experiencing severe impairment; these problems...
Mechanism
Synthesis from 1 study
Too much thyroid hormone makes every cell in the body burn energy too fast, leaving people exhausted. It also keeps the nervous system in overdrive, making it hard to sleep, focus, or move smoothly. Even after the hormone levels return to normal, the body’s energy systems and nerves stay out of...
Most probable mechanism
Too much thyroid hormone forces cells to burn energy too fast, leaving the body tired and weak. This overactivity also overstimulates the nervous system, making it hard to focus, sleep, or control movements. Even after hormone levels return to normal, the body’s energy systems and nerves stay disrupted for a long time, so people still feel exhausted and unable to do daily tasks.
Thyroid hormone excess increases mitochondrial uncoupling and basal metabolic rate, depleting cellular ATP reserves and elevating reactive oxygen species production
Elevated thyroid hormone enhances central and peripheral sympathetic nervous system activity, increasing heart rate, muscle tremor, and neural hyperexcitability
Chronic energy depletion and neural overstimulation impair neuromuscular coordination, reduce muscle endurance, and disrupt sleep-wake regulation
Persistent alterations in mitochondrial function and autonomic tone prevent full restoration of cellular energy balance and neural homeostasis despite normalization of serum thyroid hormone levels
Evidence from Studies
Supporting (1)
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