31/01/2026
Hyperthyroidism Explained 🦋
Hyperthyroidism occurs when the thyroid gland becomes overactive and produces too much thyroid hormone (T3 and T4). These hormones control metabolism, so excess levels cause the body to run in a constant “overdrive” state.
What happens in the body: An overactive thyroid speeds up many vital processes, including heart rate, digestion, temperature regulation, and nervous system activity. This can place strain on the heart, muscles, and emotional wellbeing if left untreated.
Common symptoms include:
Unintentional weight loss (often with increased appetite)
Heat intolerance and excessive sweating
Rapid or irregular heartbeat (palpitations)
Anxiety, nervousness, irritability, or restlessness
Sleep disturbances and fatigue
Muscle weakness or trembling
Changes in menstrual cycles
Eye symptoms (especially in Graves’ disease), such as irritation or bulging eyes
Common causes:
Graves’ disease (autoimmune condition – most common cause)
Thyroid nodules producing excess hormones.
Thyroid inflammation (thyroiditis)
Excess iodine intake or certain medications
If you suspect symptoms of hyperthyroidism, early medical assessment is essential for effective management and long-term health.