The temperature difference of more than 7 ° C makes people tired, and these symptoms should be paid attention to
In summer, the temperature begins to rise, and the body begins to experience various uncomfortable symptoms: dizziness, soreness, poor sleep...
Japan's "Daily News" recently published an article reminding that the temperature changes sharply in summer, and the "roller coaster" type of repeated rise and fall can easily lead to disorders of the body's autonomic nerves, and "temperature difference fatigue" will follow.
Experts interviewed
Wang Junyu, chief physician of the emergency department of Beijing Chaoyang Hospital affiliated to Capital Medical University
Zhao Jianguo, Professor of Integrative Medicine and Neurology, The First Affiliated Hospital of Tianjin University of Chinese Medicine
Professor Yang Li, China Academy of Chinese Medical Sciences
The temperature difference exceeds 7 °C, and it is easy to fatigue
According to Nagatari Nagashi, the Setagani Internal Medicine and Neurology Clinic in Tokyo, Japan, the autonomic nerves concentrated around the neck and ears are mainly responsible for maintaining normal body temperature.
Once the temperature is high or low and the temperature difference is too large, the autonomic nerve load increases, the thermoregulation mechanism is disordered, the burden on the body increases, and then the symptoms of "temperature difference fatigue" such as shoulder pain, headache, malaise, and insomnia appear. Some people may also experience symptoms of "temperature allergy" such as sneezing and runny nose.
Under normal circumstances, the difference between the maximum and minimum temperature of the day is more than 7°C, or the difference between the maximum temperature of the two days is more than 7°C, and the symptoms of "temperature difference fatigue" or "temperature difference allergy" are more likely to occur.
Kusho Ken and his team gave a self-detection method for "temperature difference fatigue" symptoms:
1. Physical or psychological discomfort during weather changes;
2. Headache;
3. Soreness and discomfort around the shoulder or neck;
4. Easy to get dizzy and tinnitus;
5. Increased burnout;
6. Feeling low blood pressure;
7. Mental problems such as anxiety disorders, adjustment disorders, depression, schizophrenia, etc.;
8. Old injury pain;
9. Unexplained palpitations and discomfort of the digestive organs;
10. Frequent motion sickness.
If symptoms 1 and 2 occur, the probability of "temperature fatigue" is 80%. The rest are typical symptoms of "temperature fatigue".
In order to maintain the normal function of the autonomic nerve, in the summer temperature rise and fall period, once insomnia symptoms occur, you may wish to soak in warm water for 10~20 minutes, the water temperature is controlled at about 38~40 °C, and the water level should be soaked in the neck.
Soaking in the bath to warm up the body is also beneficial to improve other symptoms of "temperature difference fatigue". In addition, massaging the ears and shoulders is also beneficial to restore autonomic nerve function.
The body has its own "thermoregulatory system"
From a medical point of view, "normal body temperature" is a numerical interval. In adults, for example, there are slight differences in temperature between different body parts; Among them, the temperature is closest to body temperature.
▶ Oral temperature (sublingual temperature measurement) is 36.3~37.2 °C;
▶ Rectal body temperature is 0.4 ° C higher than oral body temperature;
▶ The armpit temperature is 0.2~0.4 °C lower than the oral temperature.
Under the dual selection of gene evolution and body activity, the hypothalamus sets the "factory temperature" of the human body to about 37 ° C. Maintain normal body temperature by regulating heat production and heat dissipation.
When the skin receptors receive cold and hot signals, they are transmitted to the hypothalamus, and the hypothalamus will correspondingly make indications of vasoconstriction (need for heat production) and expansion (need to dissipate heat), which is the reason for the body to shivering and sweat.
With the help of the "temperature control system", the body temperature is maintained in a stable range. Even if it fluctuates occasionally, the amplitude does not exceed 1°C.
When the outside temperature is too high or the body produces too much heat, the thermoregulatory center will accelerate heat dissipation by expanding blood vessels, accelerating breathing, and sweating the body, but this regulation is only effective within a certain range.
Under normal circumstances, when the outside temperature reaches 33 °C, people will feel stuffy and normal activities will be affected; The external temperature reaches 36 °C, close to the core temperature of the human body, radiation heat dissipation will be greatly reduced, mainly relying on sweating and other evaporation heat dissipation; When the outside temperature reaches 38 °C, radiant heat dissipation and evaporative heat dissipation will almost fail.
7 tips to help you get through the summer
How can we survive the rising summer temperature? Experts from each subject summarized seven main points.
1
Avoid midday for outdoor activities
When the weather is hot, outdoor activities should be minimized, if you must go outdoors, you should wear light, light-colored, loose clothing, wear a sun hat, apply sunscreen, and try to avoid noon, choose morning and evening and other periods of relatively weak solar radiation.
Outdoor exercise must pay attention to the time, do not exercise at noon when the sun is strongest and the sun is strongest, and go outdoors early in the morning and evening to breathe fresh air and strengthen the body's ability to adapt.
2
Caution indoor and outdoor temperature difference
The temperature difference between indoor and outdoor should not be too large, it is more comfortable to adjust the air conditioner to about 26 ° C, and the elderly with a history of cerebral infarction and hypertension should pay more attention.
If you sweat a lot outdoors, you should dry it before blowing the air conditioner when you return indoors, and do not blow directly into the air conditioner.
3
The air conditioner prefers the dehumidification mode
The cooling mode of the air conditioner itself can also dehumidify, but it is different from the dehumidification mode.
In the refrigeration mode, when the indoor temperature is close to the preset temperature of the air conditioner, the operating intensity of the machine will be reduced, and the dehumidification function will be weakened at the same time; The dehumidification mode is based on the cooling function, but also can maintain a certain dehumidification effect.
4
Hydrate multiple times in small amounts
Replenish water in time, do not wait until you are thirsty to drink water, you can replenish 200ml every 15~20 minutes.
The water temperature should not be too high, try to drink less cold water or cold drinks. Sweat a lot, add extra salt and minerals, and drink sugar water or sports drinks.
5
Pay attention to dietary hygiene
Ensure a light diet, choose foods that are easy to digest, eat less high-calorie, greasy, and spicy foods, and reduce the burden on the stomach.
Pay attention to dietary hygiene to prevent diarrhea, leading to electrolyte imbalances and inducing heart discomfort.
6
Proper ventilation at night
When the temperature is too high at night, you can use cooling methods such as blowing fans and turning on air conditioners to create an environment suitable for sleep. It should be noted that the temperature of the air conditioner should not be lower than 24 ° C; Do not blow the fan directly at the body; Especially for the elderly and children, it is recommended to open multiple room doors at night to ensure air circulation.
7
The mood should also be cool
When the mood is calm, the sympathetic tone will decrease, and blood pressure, heart rate, metabolism, and body temperature will also decrease. The hotter the day, the more "calm" you should be to avoid bad stimuli. ▲
Editor of this issue: Yang Meng
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