How long has everyone had a fever? I am 40 years old and have not had a fever for three years. Is it normal?

Is it normal not to have a fever in 2008? As the saying goes, it is human nature and the most direct law of nature, but some friends are curious. People who often have a fever and a cold must have poor health and poor immunity, but they haven't had a fever or a cold for a year or two. Is this normal? Could it be that there is something wrong with my body and I didn't find it?

Today I will take this question to tell you what a fever is. Are people who often have a fever in good health? Or is it better for people who seldom have a fever?

The average normal body temperature of human body is between 36 ~ 37℃ (under the armpit), with fever above 37. 1℃, low fever at 37.3_38℃ and high fever at 38. 1_40℃. Life is in danger at any time above 40℃.

Fever refers to the symptoms caused by the action of human body on pyrogen, which makes the adjustment point of thermoregulation center move up. Under normal circumstances, the process of heat generation and heat dissipation of the body often keeps dynamic balance. To put it bluntly, this is a self-protection mechanism of the body, and the reasons for triggering the thermoregulatory center in the body are pathological and physiological.

Pathological fever: fever caused by the invasion of many pathogens such as bacteria, viruses, mycoplasma pneumoniae, rickettsia, fungi, spirochetes and parasites. Aseptic necrotic tissue absorption, allergic endocrine and metabolic diseases, heart failure or some skin diseases, dysfunction of thermoregulation center, dysfunction of autonomic nervous system, etc. Will cause the body to heat up.

Physiological fever: Physiology, as its name implies, is a normal physiological phenomenon. The occurrence of physiological fever is generally seen in newborns. At this time, the baby's temperature regulation center is not perfect enough, and it is normal to have a mild low fever. In addition, body temperature is also affected by time, season and environment. For example, it is normal to have a lower body temperature in the morning, a little higher in the afternoon and a little higher after meals. For women, menstruation is coming, and ovulation is about to enter, which will also cause body temperature to rise.

What about people who often have a fever? As mentioned earlier, fever is actually a protective mechanism of the human body itself. When the body fights against germs, the immune system intervenes, and a large number of immune cells join the battlefield to stimulate the thermoregulatory center. Raising body temperature is good for fighting germs. Therefore, a fever is not necessarily a bad thing. Moderate fever can strengthen the body's immune system. But only if you don't have a high fever. If the question is too high, it will be counterproductive. If it is too high, it will be life-threatening. But don't blindly test the water. It is wise to see a doctor in time if you have a fever.

What about people who don't have a fever You seldom get sick, which actually shows that you are in good health in all aspects. As long as you have healthy living habits and a healthy diet, people who exercise regularly rarely get sick. This shows that your body is well adjusted and in a balanced state, which is much stronger than those who often love to have a fever and a cold.