Recently in my quest to determine the status of my adrenal function and just overall health status, I learned about using body temperature recordings as a free and convenient means to make this determination. There are a few websites advocating this method, but the most detailed I could find is this: http://www.drrind.com/therapies/metabolic-temperature-graph#directions
All you do is record your body temperature 3 times per day, 3 hours apart, starting 3 hours after you wake up, using a standard digital thermometer that you can buy for a few bucks at any drug store. The recommended location for the recording is under the tongue, since it is the most accurate. According to Dr. Rind from the above website, if taken every day for several weeks, this information is an accurate reflection of one's general metabolic functioning and is diagnostic for several of the most common and disabling metabolic disorders like adrenal fatigue, hypothyroidism, Type 2 diabetes, etc. I have done the recordings daily for about 10 days now, and they indicate that I have hypothyroidism and adrenal fatigue, both of which I have suspected having for some time.
Does anyone here have any experience with this diagnostic method, and even if you haven't, what is your opinion on it? I think it provides some useful information, although I think it is best if a doctor or other health practitioner who has expertise in this area interprets the recordings. Maybe some of you can do the recordings and report back the results just to test the validity of it.
Personally, I think there is some merit to it. Back in March, i tracked my temps for a month between 1 & 5 times per day (when i remembered to take it). But i also took my basal temp as well, as recommended by Broda Barns (see http://en.wikipedia.org/wiki/Broda_Otto_Barnes). Broda Barns recommended taking your armpit temp, but i used oral temp instead, which was easier & quicker & just as pertinent imo.
Anyway, the results indicated that i had both adrenal issues (temps all over the shop) & hypothyroidism (low average temps, rarely above 98F in my case). This lead me to take saliva tests for Testosterone, Estradiol (E2), DHEA-S, & Cortisol x 4. Cortisol showed AM was good, but the rest; noon, afternoon & evening were all too high/excessive.
So i needed to work on fixing my adrenals/reducing my chronic high levels of cortisol.
I have slowly (over months) raised my basal (morning) oral temp up from around 96.5F to around the 97.5F mark on average. & feel better for it, i hate feeling cold.
EDIT: Ray Peat ( http://raypeat.com/articles/articles/hypothyroidism.shtml ) mentions; "In a normal person, both temperature and pulse rate rise after breakfast, but in very hypothyroid people either, or both, might fall."
I'm not sure about this one, my own experience was inconclusive? I would be interested in feedback/findings from anyone measuring temp before & after breakfast. As Jon mentions, make sure you wait at least 20mins post eating/drinking so you don't get a false reading.
I think there is some merit to it as well. I definitely think it would indicate whether or not your overall body temp is low. Not so sure about the adrenal fatigue "spread". It seems to me oral body temp fluctuates a lot during the day depending on movement, exercise, hot or cold foods, etc.