But do you know your "normal temperature"? According to the research of Stanford University, the body temperature of modern people has dropped by 0.03℃ every 10 year since the 9th century. Especially for men, it is 0.59℃ lower than that of 150 years ago. "Our physiological functions are different. Normal body temperature is no longer 37℃, but 36.6℃. Researcher Julie Parsons said.
Therefore, if 37℃ is used as the standard of fever, it is not so accurate. Researchers believe that modern people's metabolism slows down and their body inflammation decreases, which will lead to a drop in normal body temperature, and everyone's body temperature is different. Therefore, if you really want to know whether you have a fever, you should "take your temperature in the morning and evening" to find out the abnormal changes.
Do you know what your normal temperature is? Take your temperature in these five places first, and the results will be different!
The definition of "fever" means that the central temperature inside the body is too high, such as the temperature in the rectum and ear canal, rather than the body surface temperature, so different measuring tools and body parts will have different results.
There are five common methods to measure body temperature, among which anal temperature and ear temperature are closest to the real body temperature, while the commonly used forehead temperature, oral temperature and axillary temperature are easily influenced by factors such as skin mucosa and vascular contraction, and are usually 0.5℃ lower than anal temperature and ear temperature. Axillary temperature is 0.8 ~ 65438 0℃ lower than anal temperature on average, so remember to deduct these error values when measuring.
If the central body temperature is equal to or higher than 38℃, the heating temperatures of these five methods for measuring body temperature are as follows:
Anal temperature: 38℃ Ear temperature: 38℃ Forehead temperature: 37.5℃ (poor accuracy) Mouth temperature: 37.5℃ Axillary temperature: 37℃ However, ear thermometers are out of stock, so many people can only buy forehead thermometers or axillary thermometers. However, when these devices are used, the error value is relatively large, and the body surface temperature will be affected by many factors, so it is recommended to take the body temperature first.
Drinking hot water, exercising, basking in the sun for a long time and wearing too many clothes will all raise your body temperature. It is suggested that you sit still 15 ~ 30 minutes and then take your temperature, which will be more accurate. Electronic thermometers should be calibrated regularly to avoid errors. When the electronic thermometer measures the underarm temperature, it is necessary to hold the thermometer and wait at least 1 minute, so that the measured temperature will be more accurate. Second, record your temperature every day to catch "abnormality"
The real temperature of human beings mentioned at the beginning is actually decreasing. Some people may have a low body temperature, only 35~36℃, so as long as it is 37℃, it may actually be a state of low fever. But in fact, some people usually have high body temperature, exceeding 37℃, which can easily be mistaken for fever, especially women. Due to the influence of hormones, their body temperature will be very high.
Dr. Liu Boren, an expert in preventive medicine, also shared on the Facebook fan page that a big sister in the gym measured 37.8℃ with a forehead temperature gun and was classified as a guest who refused to come and go. She did a lot of blood tests and lung x-rays, all of which were normal; However, it was later found that her body temperature was around 37℃ in the morning, but "at dusk in the afternoon, her body temperature came to 37.7 or 37.8℃, which was within the normal body temperature range".
Therefore, if you want to "manage your health", or worry about your infection, and want to take your temperature, you should take your temperature in the morning and evening, and draw a temperature change curve. If it suddenly increases, you can find that you may have a fever as soon as possible.