Ask Dr. D'Adamo

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Type O with 'Hidden' Thyroid Trouble


Have been on the diet for two months and my knee arthritis problems have improved immensely. I can jog again! As a type O woman, if thryoid function is sluggish ( enough to prevent me from losing any weight at all over my two months on the diet) does it show up on standard thyroid panels or is it like the cholesterol panels where they tested a large group of middle aged men and decided 220 was "normal" until they figured out they were dying of cardiac arrests.


The best measurement of thyroid function is the basal metabolic rate, which involves taking an axillary (armpit) reading every morning before rising from bed. Several days readings should be performed sequentially and averaged. A resting axillary temperature lower than 97.5 makes me start thinking about improper thyroid function.

The Ask Dr. D'Adamo internet advice column ran from 1996 to 2009, at which time Dr. D'Adamo's teaching and programming responsibilities no longer allowed him to devote time and resources to directly answering visitor questions. However we've recently reorganized this treasure-trove of material and made it again available to his readership. He occasionally posts new entries. These are marked with a NEW tag.

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