There are a range of health effects from sauna usage. A sauna exposes your body to a dry heat at very hot temperatures. This can reap positive benefits for those in sound health, but a sauna should be used cautiously by those with health problems.
Circulation
The dry heat generated by a sauna can increase circulation. Blood vessels dilate, allowing more blood to circulate through your vessels, bringing nutrients and oxygen to the subcutaneous and surface skin tissue. This can give your skin a natural, healthy glow.
Detoxification
Saunas induce sweating, which can help rid the body of impurities. Many waste products in the body can be passed through the skin. The pores open while sitting in a sauna, providing an avenue for toxins to be expunged from your system. Also, the heat from a sauna causes your skin and internal body temperature to rise. This increases production of white blood cells and antibodies in your immune system.
Dehydration
The loss of water from your body is a drawback to saunas. According to the Harvard Medical School, the average person loses a pint of sweat during a short stint in a sauna. It is recommended that you avoid drinking alcohol before and after a sauna, drink two to four glasses of water after a sauna and to not sit in a sauna for more than 15 to 20 minutes.
Blood Pressure
The Harvard Medical School found that your pulse rate jumps 30 percent or more while in a sauna. This can nearly double the amount of blood that is pumped each minute. However, blood pressure is unpredictable, rising in some and lowering in others. Those with poorly controlled blood pressure, advanced heart failure or abnormal heart rhythms are advised against using a sauna.
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