What is the reason of turbid urine? Is it harmful to your health?

The subject is really a caring person, and he observes life carefully.

Cloudy days do lead to frequent urination, even frequent urination and urgency.

Why is this?

I'm afraid few people can answer this question correctly.

It is estimated that the most common question and answer is "on cloudy days, people are not easy to sweat, and water can only be excreted through urine, so urine will naturally be more".

In fact, even if we don't talk about the actual truth, the answer itself has logical errors: it only talks about cloudy days, not about specific temperature, and not about physical activity intensity, so the question itself doesn't involve not sweating at all.

So, what is the real reason for the cloudy urine?

One word:

Cold!

No matter what season, as long as it is cloudy, the temperature is lower than that of sunny days; Moreover, the difference between the actual somatosensory temperature and the temperature reported by the meteorological station is more obvious, that is, the actual feeling is colder.

A cold on cloudy days, even a mild cold, will lead to an increase in urine volume, and even frequent urination and urgency.

This can be achieved through three mechanisms:

People are extremely sensitive to environmental temperature changes, even slight temperature changes will be adjusted to maintain the stability of core body temperature.

As long as it is not extremely high or low temperature, the human body can achieve this goal only through the contraction and relaxation of skin blood vessels.

Therefore, skin blood vessels are very sensitive to environmental temperature changes. When the temperature drops on cloudy days, the skin blood vessels will contract. When the temperature drops to 15~ 17℃ (mediated by the receptor called TRPA 1), the bare skin blood vessels will contract to the maximum extent, and long-term exposure below 17℃ will cause frostbite-this is frostbite.

Skin is the largest organ of human body, and its blood circulation can be very large, and the change of environmental temperature can cause great changes in its blood circulation.

In a suitable temperature environment, the whole body skin blood flow is about 250 ml/min. At a fairly high temperature, the maximum can reach 6~8 liters/minute. 17℃, the lowest can be reduced to 20-50 ml/min.

In this way, on cloudy days, even if the temperature drops slightly, the blood volume in the peripheral circulation of the skin is obviously reduced, so that more blood enters the so-called central circulation in the deep part of the body, which is equivalent to a rapid increase in blood volume and a subsequent increase in blood pressure, thus stimulating the relevant volume and pressure receptors, and signaling an increase in urine secretion by inhibiting the hypothalamus from producing antidiuretic hormone, so as to balance the increase in blood volume and the increase in blood pressure.

This is called "cold diuresis" in medicine.

Therefore, urine turbidity is a real life experience, supported by medical theory and evidence.

In the cold winter, people engage in outdoor activities for a long time, and this feeling is particularly obvious. When you return to a warm room, you will often feel thirsty soon and need to replenish water in time.

This stimulation requires a lower temperature than cold diuresis.

In the rat experiment, it was found that when the rat moved from the room temperature of 27℃ to the low temperature environment of 4℃, the bladder capacity of the rat decreased instantly and the number of urination increased rapidly. When it is turned back to the room temperature of 27℃, the bladder reactivity will soon return to its original level.

This is also confirmed by human observation experiments.

Not only does the ambient temperature drop, but even if the body touches low-temperature objects locally, it will induce frequent urination and even urgency.

For example, wash your hands with cold water and step barefoot on the cold ground.

Why is this?

Animal experiments have clarified the molecular mechanism of this phenomenon. It is believed that cold can activate TRPM8 and TRPA 1 receptors, and send a signal to cause overactivity of bladder detrusor.

TRPM8 and TRPA 1 are both members of the cation channel receptor family called transient receptor potential (TRP). The receptor family has many members and is widely distributed in all parts of the body. It has many physiological functions and also plays a role in many pathological processes.

One of its important physiological functions is as a temperature sensor.

TRPV 1, the so-called capsaicin receptor, is the earliest member of this family, and it is a harmful high-temperature receptor, which feels the temperature above 42℃.

TRPM8 and TRPA 1 are cold receptors, and the temperature range of TRPM8 is 25℃? 34℃ is a mild low temperature, while TRPA 1 feels harmful cold below 17℃ ..

It is found that these two receptors are distributed in the lower urinary tract, which is related to the excessive detrusor activity caused by exposure to cold.

Even local mild hypothermia can mediate bladder overactivity by stimulating TRPM8.

In one experiment, acetone (which can activate TRPM8), cotton swab, warm water at 37℃ were used to stimulate the back skin of mice, or the hind feet of mice were forcibly clamped. Results Acetone stimulation can cause bladder overactivity, but the other three stimuli can't. If TRPM8 gene is knocked out in mice, this reaction will disappear, but mice with TRPA 1 gene knocked out will not be affected-it has been proved that only mild hypothermia stimulation can induce bladder overactivity, causing frequent urination and urgency.

In a word, cold stimulation can stimulate bladder activity through cold diuresis and directly, leading to increased urine secretion, frequent urination and even urgency.

No matter whether the urine volume is greatly increased or the urine frequency is urgent, people's direct experience is "polyuria"

This is the scientific principle behind excessive urine on cloudy days.

Due to the cold cloudy day, the temperature drop is not significant, so this effect is not significant, so it will not cause any health hazards.

However, as mentioned above, if you are driven by cold, increased urination after long-term outdoor activities will lead to dehydration. When you return indoors, you should replenish water in time, especially for the elderly, so as to avoid health hazards such as dizziness due to changes in blood volume and blood pressure and increase the risk of falling.

If you participate in activities such as winter swimming, you need to pay special attention to hydration, and you need to replenish water continuously during the activity, instead of waiting until you return to a warm room.

I think people's excessive urination is related to several factors, one is related to the hot and cold weather, the other is related to people's labor movement, the other is related to the amount of water people drink, and the other is related to people's health.

Didn't you say that cold shrinks and heat rises? Rain or shine, cold and hot, heat is easy to evaporate water in the human body, so urine will become less and colder, and water in the human body will not evaporate, so urine will become more. Therefore, in comparison, it is cold and wet, and it is less hot during the day.

People work hard and need a lot of volatile water, so they have less urine. No work, no exercise, less volatile water, so more urine. Drinking more water and drinking less water is also related to urine volume. Drink more water and exercise less. In cold weather, urinate more, drink less, and exercise more in hot weather.

Urine volume is closely related to people's health. Excessive yang heat, less urine, and excessive yin deficiency and cold. There are also people with visceral diseases, which destroy the digestive system of the human body and also cause excessive urine or less urine. Everything should be moderate, and long-term urination is problematic. Too little urine will affect the normal and healthy transportation of the body, and too much urine is not good, so we should pay attention to it.

What is the reason of turbid urine? Is it harmful to your health?

The subject is really a caring person, and he observes life carefully.

Cloudy days do lead to frequent urination, even frequent urination and urgency.

Why is this?

I'm afraid few people can answer this question correctly.

It is estimated that the most common question and answer is "on cloudy days, people are not easy to sweat, and water can only be excreted through urine, so urine will naturally be more".

In fact, even if we don't talk about the actual truth, the answer itself has logical errors: it only talks about cloudy days, not about specific temperature, and not about physical activity intensity, so the question itself doesn't involve not sweating at all.

So, what is the real reason for the cloudy urine?

One word:

Cold!

No matter what season, as long as it is cloudy, the temperature is lower than that of sunny days; Moreover, the difference between the actual somatosensory temperature and the temperature reported by the meteorological station is more obvious, that is, the actual feeling is colder.

A cold on cloudy days, even a mild cold, will lead to an increase in urine volume, and even frequent urination and urgency.

This can be achieved through three mechanisms:

Cold diuresis

People are extremely sensitive to environmental temperature changes, even slight temperature changes will be adjusted to maintain the stability of core body temperature.

As long as it is not extremely high or low temperature, the human body can achieve this goal only through the contraction and relaxation of skin blood vessels.

Therefore, skin blood vessels are very sensitive to environmental temperature changes. When the temperature drops on cloudy days, the skin blood vessels will contract. When the temperature drops to 15~ 17℃ (mediated by the receptor called TRPA 1), the bare skin blood vessels will contract to the maximum extent, and long-term exposure below 17℃ will cause frostbite-this is frostbite.

Skin is the largest organ of human body, and its blood circulation can be very large, and the change of environmental temperature can cause great changes in its blood circulation.

In a suitable temperature environment, the whole body skin blood flow is about 250 ml/min. At a fairly high temperature, the maximum can reach 6~8 liters/minute. 17℃, the lowest can be reduced to 20-50 ml/min.

In this way, on cloudy days, even if the temperature drops slightly, the blood volume in the peripheral circulation of the skin is obviously reduced, so that more blood enters the so-called central circulation in the deep part of the body, which is equivalent to a rapid increase in blood volume and a subsequent increase in blood pressure, thus stimulating the relevant volume and pressure receptors, and signaling an increase in urine secretion by inhibiting the hypothalamus from producing antidiuretic hormone, so as to balance the increase in blood volume and the increase in blood pressure.

This is called "cold diuresis" in medicine.

Therefore, urine turbidity is a real life experience, supported by medical theory and evidence.

In the cold winter, people engage in outdoor activities for a long time, and this feeling is particularly obvious. When you return to a warm room, you will often feel thirsty soon and need to replenish water in time.

Cold will directly stimulate the decrease of bladder capacity.

This stimulation requires a lower temperature than cold diuresis.

In the rat experiment, it was found that when the rat moved from the room temperature of 27℃ to the low temperature environment of 4℃, the bladder capacity of the rat decreased instantly and the number of urination increased rapidly. When it is turned back to the room temperature of 27℃, the bladder reactivity will soon return to its original level.

This is also confirmed by human observation experiments.

Acute colds can also directly induce urgency.

Not only does the ambient temperature drop, but even if the body touches low-temperature objects locally, it will induce frequent urination and even urgency.

For example, wash your hands with cold water and step barefoot on the cold ground.

Why is this?

Animal experiments have clarified the molecular mechanism of this phenomenon. It is believed that cold can activate TRPM8 and TRPA 1 receptors, and send a signal to cause overactivity of bladder detrusor.

TRPM8 and TRPA 1 are both members of the cation channel receptor family called transient receptor potential (TRP). The receptor family has many members and is widely distributed in various parts of the body. It has many physiological functions and also plays a role in many pathological processes.

One of its important physiological functions is as a temperature sensor.

TRPV 1, the so-called capsaicin receptor, is the earliest member of this family, and it is a harmful high-temperature receptor, which feels the temperature above 42℃.

TRPM8 and TRPA 1 are cold receptors, and the temperature range of TRPM8 is 25℃? 34℃ is a mild low temperature, while TRPA 1 feels harmful cold below 17℃ ..

It is found that these two receptors are distributed in the lower urinary tract, which is related to the excessive detrusor activity caused by exposure to cold.

Even local mild hypothermia can mediate bladder overactivity by stimulating TRPM8.

In one experiment, acetone (which can activate TRPM8), cotton swab, warm water at 37℃ were used to stimulate the back skin of mice, or the hind feet of mice were forcibly clamped. Results Acetone stimulation can cause bladder overactivity, but the other three stimuli can't. If the TRPM8 gene in mice is knocked out, this reaction will disappear, but the mice with TRPA 1 gene knocked out will not be affected-it has been proved that only mild hypothermia stimulation can induce excessive bladder activity, causing frequent urination and urgency.

In a word, cold stimulation can stimulate bladder activity through cold diuresis and directly, leading to increased urine secretion, frequent urination and even urgency.

No matter whether the urine volume is greatly increased or the urine frequency is urgent, people's direct experience is "polyuria"

This is the scientific principle behind excessive urine on cloudy days.

Is urine turbidity a health hazard?

Due to the cold cloudy day, the temperature drop is not significant, so this effect is not significant, so it will not cause any health hazards.

However, as mentioned above, if you are driven by cold, increased urination after long-term outdoor activities will lead to dehydration. When you return indoors, you should replenish water in time, especially for the elderly, so as to avoid health hazards such as dizziness due to changes in blood volume and blood pressure and increase the risk of falling.

If you participate in activities such as winter swimming, you need to pay special attention to hydration, and you need to replenish water continuously during the activity, instead of waiting until you return to a warm room.

Whether male or female, frequent urination on cloudy days or in winter, this situation is mostly caused by kidney-yang deficiency. If it is a male, prostatitis will also urinate frequently.

In fact, I think this is a very normal phenomenon. The amount of urine in hot days is more than that in cold days, mainly because heat will make people sweat and take away some water, so people will naturally have less urine.

In cold weather, the evaporation of liquid in our body will decrease, and we will feel comfortable, so urine will increase. But if there is a lot of urine, this is abnormal, probably because we are a little weak, so we should see a doctor for treatment.

Under normal circumstances, the daily urine output is about1500ml. Drink more water, the urine volume will still increase, but it may also be a urinary tract infection. It is recommended to go to the hospital for examination, make a routine urine test and renal function test to rule out the possibility of disease.

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