What and where it is
The thyroid is a small, butterfly-shaped gland at the front of your neck, just below your Adam's apple. Despite its size, it has a big role: it produces thyroid hormones (mainly T4 and T3) that regulate your metabolism — the rate at which your body uses energy.
Because metabolism affects nearly every organ, the thyroid quietly influences a huge amount of how you feel day to day.
What it controls
Thyroid hormones help control your energy levels, body temperature, heart rate, weight and metabolism, digestion, mood and concentration, skin and hair, and menstrual cycle. When levels are just right, you don't notice it working. When they're too low or too high, the effects show up across all these areas.
The thyroid is itself controlled by the pituitary gland in the brain, which releases TSH (thyroid-stimulating hormone) to tell the thyroid how much to produce — which is why TSH is the main blood test used to check it.
When it goes wrong
If the thyroid makes too little hormone (hypothyroidism), everything slows down — fatigue, weight gain, feeling cold. If it makes too much (hyperthyroidism), everything speeds up — anxiety, weight loss, palpitations. Both are common, especially in women, and both are diagnosed with a simple blood test.
If you have symptoms that might fit, a GP can check your thyroid function and explain what your results mean. A telehealth consult makes this easy to arrange.
Related condition
Thyroid health →References & sources
- 1.Hypothyroidism — healthdirect
- 2.Thyroid gland — healthdirect
- 3.Thyroid gland — Better Health Channel
This content is general information and not a substitute for individual medical advice. Please consult a GP for your personal situation.
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