Underactive Thyroid and Depression - Missing This Diagnosis is Just Sad

It is well established that an underactive thyroid can cause depression. In a 1993 study entitled Subclinical hypothyroidism: a modifiable risk factor for depression?, the authors reported a significantly higher lifetime frequency of depression if subclinical hypothyroidism is present compared to those without subclinical hypothyroidism (56% compared to 20%).

In a previous post about how a low thyroid can make you feel depressed, I wrote about possible causes of the depression.

So if it is so well understood that an underactive thyroid can cause depression, why are so many doctors missing it and so many people not sticking up for themselves when they know something is not right?

First, it is not always easy to pinpoint an underactive thyroid. While there is usually some other clues that point to an underactive thyroid (family history, stubborn weight gain, thinning hair, etc.), it is not always the case.

Second, very dated information still is erroneously used. For instance, a doctor that excludes an underactive thyroid as a diagnosis because they do not live in the goiter belt will miss tons of underactive thyroid problems in his/her office.

Third, many rely on lab test as gospel. These lab test mean very little when they are interpreted without comparing the results to the individual (as this study on subclinical hypothyroidism demonstrated).

Lastly, depression is easy for a doctor. "Take these and come back in 3 months." No need to dig further or spend much time with the patient. It's an easy buck.

In cases of depression, an underactive thyroid should be considered till proven otherwise. Missing this diagnosis is just...well sad.

technorati tags: underactive thyroid depression subclinical hypothyroidism