Thyroid Disease
Last year, while sitting through a medical board review course for integrative medicine, an inexplicable feeling of fatigue washed over me. I had been sleeping well, yet still continuing to wake up exhausted. It was no small coincidence that the topic of discussion was the scientific evidence behind the integrative medicine approach to treating thyroid disease. You needn't have a medical background to know my symptoms were not normal. My hairdresser was watching my hair fall out by the handfuls for months, and she kept asking me about potential thyroid issues.
Have you also suffered from similar symptoms that could be related to thyroid disease? Subclinical thyroid disease and hypothyroidism are both more common in women than in men in the United States. I had gone to my primary care physician many times over the years complaining of symptoms. My thyroid stimulating hormone (TSH) levels always came back in the upper limit of normal range (around 10 mIU/L) so therefore no other tests were done. This is the problem. Often, to screen potential thyroid issues, physicians only check this one hormone level, which is created in the brain.
The serum TSH has a wide range of normal (from 4-10 IU/L), and your own TSH level's range of normal may be less than a calculated average for the entire population. According to the 2012 American Association of Clinical Endocrinology Guidelines, there are many reasons for a varying TSH level. Checking a serum TSH level is a screening test only, and not truly designed to diagnose a thyroid problem or monitor therapy. These guidelines recommend that if a patient is symptomatic, the additional two main thyroid hormones should also be checked: thyroxine (T4) and triidoothyronine (T3) or FT4 and FT3 levels.