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 Is the worldwide popular sauna healthy, or is it harmful to our health?

Saunas are celebrated around the world, but the truth is less innocent than spending a few minutes in an especially warm room, whether it is dry or wet.
In saunas, the hot air damages our lungs when we breathe it in, and almost as bad, the low oxygen level in the air damages our entire body since only a few oxygen molecules are present.

Hot and dry air can cause the mucous membranes in the lungs to dry out and irritate the airways. This can lead to various discomforts, including coughing, panting, and shortness of breath. In extreme cases, high air temperature can even lead to severe damage to the respiratory tract.
In these conditions, the proteins in the skin and muscles crystallize, potentially clogging the capillaries and other small blood vessels.
Some bacteria are better than other bacteria, and our body always has various forms on it.

Some bacteria on our skin are especially important, and even a short time in a sauna can harm or even kill bacteria on the skin due to the high temperatures.
The exact temperature that kills bacteria varies depending on the type of bacteria, but generally, most bacteria get killed at temperatures of 140-176°F (60-80°C). Even a sauna visit of 15 minutes is enough to reach these temperatures.

Human skin is home to a variety of bacteria that can be both harmful and beneficial. However, some of them are particularly important for the human organism. One of the most important is Staphylococcus epidermis, a bacterium found on the skin and mucous membranes that plays a vital role in the defense against harmful microorganisms.
Another important bacterium is Propionibacterium acnes, which is part of the normal skin flora and regulates the skin's pH level.

A healthy microbiome on the skin is crucial for the health and functioning of the skin. It helps keep harmful bacteria at bay, maintain skin moisture, and reduce the risk of skin diseases.
Disrupting the microbiome on the skin can lead to a number of problems, including acne, fungal infections, and allergic reactions.

Anyone can conduct these same tests at home to determine what happens to the human body when visiting a sauna.
After preheating an oven to 194°F (90°C), put 7 oz. of ground beef, a raw egg, and a small, fresh green leafy vegetable on an oven-safe dish and place it in the oven at 90°C or 194°F for 15 minutes.

After this short amount, you will see the result. The egg has become firm, the 7 oz. of ground beef is cooked – you can eat it without problems – and the green leafy vegetable is so dried up, so you can crumble it in your hands. Do you still believe that visiting a sauna is healthy for our bodies?
Therefore, based on these test results, and others, we strongly advise against any visit to a sauna, especially where the temperature is much considerably higher than the actual body core temperature.