Could It Be Your Thyroid Causing Your Poor Health? Many people live with the symptoms of low thyroid function often for years, where their thyroid gland works sluggishly without them even realizing it. Thyroid conditions can be quite common and it's estimated that about 20-25% of the female population may suffer from hypothyroidism. Most go on living their life in a debilitated state. Read more and what you can do about it here.