How infrared sauna helps excretory system

Continuing my research that was covered in this post about definition of toxin, I decided, as a next step, to get a closer look at human elimination organs. My main questions were:

  1. How harmful substances, poisons and wastes leave a human body? By what ways?
  2. How they appear in a human body? What are external or internal sources?
  3. Is it true that some portion of substances/poisons/waste can accumulate in a human body? Why it is not eliminated?

These are very deep questions and there are many professionals that study them. There are many mysteries yet to discover. If we knew all for certain, living healthy could be much easier. But my position is that complexity shouldn’t stop us from understanding basic, simple things. Knowledge of these basic principles of how a human body works helps to develop respect to our bodies, internal organs, how they work together to keep us healthy and alive and let us enjoy our being. Knowing will lead to making a conscious decision in situations where you previously haven’t any criteria. For example, when deciding eat or not to eat that additional piece of sweet cake, you previously followed your “I want it so I’ll have it” reason. But this will be different if you’ll know what it will be an additional burden to your body so it can stop you from overeating. In contrary, knowing why fruits and vegetables rich with fiber help body’s digesting process you can decide give them a bigger share in your menu.
Since talking about all three questions will be to big for a one post, I will take the first one, and leave others for later posts. So:

How harmful substances, poisons and wastes leave a human body? By what ways?

The organs that work for elimination are liver, kidneys, lungs and skin. Liver breaks toxic substances of our body into non-toxic waste. Kidneys filter wastes from the blood and they are excreted to bladder as urine. Lungs remove from the blood carbon dioxide, and also take part in drug metabolism (to a less degree than liver). Sweat from skin removes some amount of urea and salts.

From this there are three main ways how wastes leave the human body:

  1. Urine.
  2. Air exhaled from lungs.
  3. Sweat.

If there are toxins in our body then they should take one of these routes to leave our body. Most of sources I’ve read about human excretory system talk mainly about excreting metabolic wastes, not toxins. Toxins (or poisons) are studied by toxicology. My next goal is to learn more about our excretory system from the toxicological point of view. But let’s return to the ways how toxins leave our body.

All three ways enumerated above are somehow tied to the blood. Sweat is produced from plasma that has been transported to skin surface by blood. Urine is filtered from blood by kidneys. Gases that are exhaled are brought to the lugs also by circulatory system. Blood is a transport system of our bodies. To leave the organism, toxins and wastes should first come to blood. Blood flow is not equal in different parts of our body, and it can change with time, sometimes even rapidly. Did you ever had cold arms or feet? That usually means that there is low blood flow in these bodyparts. In a healthy human blood should from time to time adequately flow through every tissue of a body, to transport necessary substances and carry out toxins. Modern urban lifestyle makes us to break that principle often. If we don’t exercise regularly, our blood flow can be uneven.

Now let’s apply this knowledge to understand how infrared sauna (or ordinary sauna) helps our body to get rid of toxins and wastes. Sweat is one ways, but it is not major. At last, its main function is thermoregulation. Yes, sweat contains wastes, but it cannot compete with kidneys or liver. More important effect of an infrared sauna is that it increases blood flow and heart rate. This helps wash with blood all tissues of our body, especially tissues that don’t receive a good amount of blood flow in an everyday life. After that kidney and liver can take care of toxins that blood washed out.

Please note, that I can be wrong. I’m not a doctor. To become a doctor one should undertake a serious education effort. My research was done in several days with reading some popular sources and articles, and I could overlook something. But as I wrote earlier in this post, I believe that every man can understand basic principles of human physiology and health to use them to live a happier and healthier life.

More reading:

Excretory System
The urinary system
Excretory System
Introductory Anatomy: Excretory & Reproductive Systems

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