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The Japanese Wikipedia states that the mean human body temperature is 36.0 °C (here, row "ヒト").
The statement is referenced by data from the Japanese government.

Actually all of my Japanese friends think the same.
A body temperature of 37.5 °C is considered serious illness in Japan, justifying absence from work.

Most other countries' sources cite 37.0 °C as the mean human body temperature.
Is there a biological explanation to this apparent discrepancy?

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Here is a somehow related article you might want to read. health.harvard.edu/press_releases/normal_body_temperature –  Remi.b Oct 23 '13 at 6:22
Hi Remi.b: Interesting, feel free to propose it as answer! I see two points: 1) Well-accepted means are erroneous 2) Mean depends on the group's age and potentially other parameters. –  nic Oct 23 '13 at 7:00
I won't pre-empt @Remi.b but the English Wikipedia's got a good breakdown of the variations. –  Amory Oct 23 '13 at 13:32
36.0 °C is what I was taught when very young, but then it got to 36.8 °C. Actually, my own normal temperature is more like 36.1 °C and I am not japanese. As I literally only had a real fever once in my life, 37.5 °C would be a pretty serious condition for me. For my cousin, who gets a fever with every light cold, it would be kind of normal. So, there is a lot of variation even between related people. –  skymninge Oct 25 '13 at 6:44
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1 Answer

I think this depends on method of measuring. Human body is neither 36 nor 37 -- it varies. It is 36.6 in an axilla and 37 in a mouth.

May be Japanese measure somewhere else? For example at a front?

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Do you have any references for that (temperature in various parts of the body and methods of measuring in different countries)? It would be quite important to cite them in this case... –  nico Mar 30 at 7:50
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