There is a difference in body temperature between men, women and children.
Normal body temperature is 36℃~37℃ (underarm). Dr. Tokushima Ishihara, a Japanese natural health expert, proposed a more precise range: the ideal body temperature is 36.5℃~36.8℃. Body temperature fluctuates slightly within 24 hours, with the lowest at 2-6 am and the highest at 1~6 pm, and the fluctuation generally does not exceed 1℃.
Constant body temperature allows us to live at different temperatures, but different people's body temperatures are slightly different. Children's body temperature is slightly higher, reaching 36.8℃ ~ 37℃; Babies and the elderly have lower body temperatures. Especially for premature infants, their body temperature is easily influenced by the environment because of the imperfect development of thermoregulation mechanism. The average body temperature of women is about 0.3℃ higher than that of men, and it will change with the change of menstrual cycle. Normal women's basal body temperature takes ovulation day as the dividing point, showing a state of low before and high after, also known as "biphasic body temperature". There is little progesterone before ovulation, and the body temperature is generally 36.2℃. After ovulation, the body temperature rises sharply by 0.3℃~0.6℃, which makes the basal body temperature rise to about 36.7℃. The study of Pennsylvania State University found that the body temperature of anemic women was 0.7℃ lower than that of women with normal hemoglobin, and the heat production was less 13%.
Traditional Chinese medicine expounds body temperature from the perspective of yang: yang is the ability of human body to resist external evils, with sufficient yang, full functional state of human body, and low yang deficiency. People with insufficient yang will have a lower temperature, generally between 35.5 and 36℃. Yang is closely related to nature, that is, it is often said that man corresponds to nature. For example, pay attention to latent sun in winter, or you will get sick easily in the coming year.
36℃ is a health warning line.
In a day, the morning with the lowest body temperature is often the peak of death, and it is also easy for patients with asthma, insomnia and depression to wake up early at this time. High body temperature in the afternoon is also the best time for physical and mental health. The following mysteries of body temperature are particularly close to health.
36℃~ 37℃； The strongest immunity. Ishihara believes that normal body temperature means normal basal metabolic rate, and blood is full of fresh oxygen and nutrients, which can improve the function of white blood cells, help resist the invasion of viruses and bacteria, and enhance immunity. According to statistics, the body temperature drops 1℃, the basal metabolism drops by about 12%, and the immunity drops by about 30%.
Below 36℃: danger signals appear in the body. When the body temperature is lower than 36℃, the body will tremble to generate heat energy, accompanied by dark circles, red nose, purple complexion, palms and lips. Among modern women, due to factors such as increased pressure, lack of exercise, irregular sleep and diet, the number of patients with chills has increased. Hypothermia leads to poor blood circulation, abnormal white blood cells and decreased immunity. Diseases such as asthma, pneumonia and rheumatism will naturally come to you.
Below 35℃: the most deadly to the elderly. When the body temperature drops to 35℃, it is called hypothermia. Patients are consciously afraid of cold, their skin is cold, their limbs are cold, they are unwilling to get up, and it is difficult to walk. The elderly and malnourished people are most likely to appear. The elderly with hypothermia in autumn and winter account for about 10%. The elderly are prone to cardiac arrest when their body temperature is below 35℃ for more than 24 hours.
When the body temperature drops to 32℃, the chills disappear and drowsiness occurs. When the temperature drops to 28℃, ventricular fibrillation will occur, which will eventually lead to cardiac arrest; When the temperature drops to 25℃, the patient is in a coma, the reflex disappears, the pupil size varies, and the response to light is weak; When the temperature drops to 20℃, the heart will stop beating.
The best position for hand temperature measurement is the abdomen.
When the body temperature changes, people are used to touching their foreheads to see if they have a fever, but in fact, the abdomen is the best place to feel the body temperature. Traditional Chinese medicine believes that the abdomen is "the palace of internal organs, the source of yin and Yang Qi and blood". If the abdomen is cold, it means that the blood circulation under the umbilicus is not very good.