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Researchers say that the body temperature (Fahrenheit) of men born in the 2000s is on average 1.06 degrees lower than men born in the early 1800s. Similarly, women born in the 2000s have an average body temperature that is 0.58 degrees lower than women born in the 1890s. All in all, these conclusions point to a decrease of 0.05 degrees among the U.S. population each and every decade.
“Our temperature’s not what people think it is,” says Dr. Julie Parsonnet, a professor of medicine and of health research and policy, in a release. “What everybody grew up learning, which is that our normal temperature is 98.6, is wrong.”
Three distinct data sets from different time periods were analyzed for this study. The first consisted of U.S. military service, medical, and pension records for Union Army veterans from the Civil War. This dataset encompassed body temperature readings between 1862-1930, and included individuals born as far back as the early 1800s. The second was taken from a U.S. nutrition survey from 1971-75, and the third consisted of patient data from Stanford Health Care between 2007-2017.
All three of these datasets amounted to a total of 677,423 temperature measurements for researchers to study. Using all of that information, they constructed a linear model of U.S. body temperatures over time.
Now, thermometry has obviously improved over the past 200 years, and the study’s authors wanted to be sure that their findings didn’t simply represent improvements in thermometer technology. So, they looked into fluctuating body temperature trends within each individual dataset, working off the assumption that measurements within each set would have been taken using similar thermometers. Even then, they noted incremental decreases in body temperature across individual decades, effectively confirming their findings regarding the dataset as a whole.
Expanding on the possible reasons for this nation-wide decline in body temperature, researchers say it could be connected to a drop in metabolic rate, which basically means we’re all using less energy. This drop in energy usage may be due a decline in inflammation among Americans.
“Inflammation produces all sorts of proteins and cytokines that rev up your metabolism and raise your temperature,” Parsonnet explains.
The American population largely live in comfortable settings, and in most cases, in homes complete with central heating and air conditioning. These wonderful temperature stabilizing tools make it much easier for our bodies to maintain a stable temperature, meaning we’re expending less energy.
If it’s anything less than 75F — I have jeans and a hoody on.
The body is very good at making these adjustments to local conditions but the current trend of a large majority of the population living in a reverse cycle aircon environment of constant temp and humidity might 'breed out' that capability over time.
originally posted by: Deplorable
Have lived with a body temp of 96.8. No dyslexia ... but blown off by medical 'professionals' forever.
Let's do the math:
96.8 + 1.8 = 98.6
98.6 + 1.8 = 100.4
Doctors (all of mine at least) can go to Hell.
Great OP: S&F
originally posted by: AutomateThis1
This .gov site says norm temps are range between 97 and 99. So, I guess this new norm is still within the accepted norm.