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Thyroid Disorders Community
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14834561 tn?1436818875

Basal temperature for autoimmune thyroid?

A long time ago, my fertility specialist wanted me to take my basal temperature readings by placing the thermometer under my tongue.

With thyroid basal temperatures, I only see instructions about armpit readings.

Can anyone explain the reasoning behind armpit temps?
1 Responses
Avatar universal
The concedpt of using temperature to determine metabolism and thyroid status was developed by Dr. Broda Barnes some time ago.  He got patients to put a thermometer in the armpit for 5 minutes before getting out of bed in the morning, had coffee, food or done anything significantly physical.  He preferred an axillary temperature rather than the mouth because "so many people have low grade unsuspected sinus infections that generate heat only in the oral cavity thereby falsely raising the oral temperature."  

So it was just a way of trying to assure the most accurate temperature result possible.  If there is no sinus infection, then oral temperatures are fine, but they have to be compared to a different reference range.  
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