8 Comments
User's avatar
Experimental Fat Loss's avatar

Wow, crazy with the thyroid stuff! 36.7C seems to be just over 98.0F, that's pretty close to my "normal" temp. I rarely go down to 97, and rarely up into 99. It's usually mid 98.

Expand full comment
John Lawrence Aspden's avatar

It's kind of sensitive to how you measure it, but legendary-crackpot-who-might-have-been-onto-something Broda Barnes thought that for a healthy man, a waking temperature measured with a mercury thermometer for ten minutes under the armpit should be 36.7C.

Any lower and he'd have diagnosed you as hypothyroid and treated you!

Expand full comment
Experimental Fat Loss's avatar

As you probably know, the r/saturatedfat people think the same. Not sure where it came from for them, maybe Ray Peat?

Expand full comment
John Lawrence Aspden's avatar

Yes, I think what Broda Barnes was seeing when he decided that 40% of the US population was hypothyroid was in fact a general slowdown in metabolism, a wave of ill health, of unknown cause, and which now gets "diagnosed" as chronic fatigue, fibromyalgia, major depression, IBS, ... the list goes on and on.

I decided that was true about ten years ago, when dealing with my own unexpected collapse, and that's why I'm taking thyroid drugs. A miracle cure until Summer 2021 when it all went wrong again, and this time thyroid couldn't fix it.

There's nothing wrong with my thyroid as far as I know. Of course we checked!

It's kind of a minor miracle that we've just ignored all this for fifty years and written it off as psychological.

If it turns out that it was all caused by PUFAs, allowed into the food supply on the advice of nutritionists and cardiologists, I'll have a heart attack laughing.

But Christ, what a catastrophe if it's true....

Expand full comment
Experimental Fat Loss's avatar

There's been some recent research. I think Herbert Pontzer, a pretty respected mainstream science man guy, has recently posted about how weird that the average core body temp and TDEE has gone down for over 50 years, which could explain the obesity epidemic.. Brad Marshall interacted with him on Twitter about it IIRC.

Expand full comment
John Lawrence Aspden's avatar

One thing I trust Victorian doctors to have got right was accurate measurement of body temperature. They thought it was really important, and they made good thermometers, and they thought human body temperature was 98.6F. Everyone used to know that number.

(That's actually why the Fahrenheit scale is the way it is. Freezing salt is 0 and human temperature should have been 100. But of course they got it a bit wrong, unless body temperature had *already* fallen by Victorian times)

Expand full comment
Experimental Fat Loss's avatar

98.1 just now.

Expand full comment