- Resistant to cold and heat
How your thyroid works affects how you feel your temperature.
One symptom of hypothyroidism is an inability to take colds.5 An underactive thyroid slows down your body’s systems, meaning your cells have less energy to burn. Less power means less heat.
On the other end of the spectrum, an overactive thyroid puts energy-producing cells into overdrive. Therefore, people with hyperthyroidism are unable to tolerate heat.4
Why am I always cold? 11 Possible causes
- Difficulty sleeping
Sleep disorders associated with thyroid symptoms include insomnia, restless legs syndrome, and sleep apnea. Untreated thyroid disorders can exacerbate these sleep problems.
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