One in 20 people in the UK have a thyroid problem ... What to do if you have early signs of thyroid problems? It's important ...

The other two hormones, T3 and T4, amount to most of the gland’s output - about 20 per ... more common problem is a condition knowns as ‘hypothyroidism’ - a low functioning thyroid.

The most common thyroid-related problems result from an abnormal production of thyroid hormones. Hypothyroidism, or an underactive thyroid, involves insufficient amounts of thyroid hormone.