Average Body Temperature In South Africa

What is Body Temperature?

Normal human body-temperature is the typical temperature range found in humans. The normal human body temperature range is typically stated as 36.5–37.5 °C. Human body temperature varies. 

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Average Body Temperature In South Africa

The body’s normal temperature is around 37°C, however it can vary according to the time of day. If your temperature is over 38°C when measured orally, then you are considered to have a fever. Fevers happen when your immune system is fighting off infections such as colds, coughs and ear infections.

Studying historic trends in body temperature

To test their hypothesis, the researchers analyzed information from three datasets:

The first included data from 1862–1930 obtained from Union Army veterans of the Civil War.

The second dataset was from the United States National Health and Nutrition Examination Survey I, which took place from 1971–1975.

The third dataset was from the Stanford Translational Research Integrated Database Environment, which contains data from people who received healthcare through Stanford between 2007 and 2017.

Overall, the scientists had access to 677,423 temperature measurements, which they integrated, forming a model of change over time.

New normal body temperature is cooler

Some of the researchers’ findings include:

  • The body temperature of men today is, on average, 0.59°C lower than that of men born in the early 19th century.
  • Similarly, women’s body temperature dropped by 0.32°C from the 1890s to today.
  • Overall, the analysis found a 0.03°C decrease in average temperature with every decade.

To check whether the decreases stemmed from advances in thermometer technology, Protsiv and the team looked at changes within datasets, assuming that doctors in each historical period were generally using the same types of thermometers.

The results of the analysis within datasets reflected the changes in the combined data. “Our temperature’s not what people think it is,” says Dr. Julie Parsonnet, a professor of medicine, health research, and policy, and the senior author of the study.

“What everybody grew up learning, which is that our normal temperature is [37°C], is wrong.”

Dr. Julie Parsonnet

However, because gender, time of day, and age can each change our body temperature, the researchers do not advise updating the standard for all U.S. adults.

What has caused our temperature to drop?

So why has the average body temperature changed? “Physiologically, we’re just different from what we were in the past,” Dr. Parsonnet says.

“The environment that we’re living in has changed, including the temperature in our homes, our contact with microorganisms, and the food that we have access to.”

“All these things mean that, although we think of human beings as if we’re monomorphic and have been the same for all of human evolution, we’re not the same. We’re actually changing physiologically.”

Furthermore, Dr. Parsonnet believes, the average metabolic rate, which indicates how much energy our bodies use, has declined over time. This decrease could result from a decrease in inflammation.

“Inflammation produces all sorts of proteins and cytokines that rev up your metabolism and raise your temperature,” she says.

Finally, air conditioning and heating have resulted in a more consistent ambient temperature, making it unnecessary to expend energy to maintain the same body temperature.

Is 36.7 a low-grade fever?

a Low-Grade Fever (LGF) You can monitor your fever by simply taking your temperature. A low-grade fever is often classified as an oral temperature that is above 98.6° F (37° C) but lower than 100.4° F (38° C) for a period of 24 hours. 1 A fever of 103° F (39° C) or higher is more concerning in adults.

Is 36.9 a fever in adults?

A fever (high temperature – 38 degrees Celsius or above) can be a symptom of COVID-19. Your body’s normal temperature is between 36 and 36.8 degrees Celsius. A high temperature or fever, for most people, is when your body temperature is 38 degrees Celsius or higher. This can be a sign that you are unwell.

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