The mineralized hot water of the “spas” has different effects on the human body. Some authors divide them into three, biological, physical and chemical, although in reality all act at the same time.
Hot spring baths increase the temperature of the body, in addition it increases the hydrostatic pressure of the body, the reason why it increases the blood circulation and the oxygenation.
This increase in temperature helps to dissolve and remove toxins from the body.
By increasing oxygenation, the bath in hot springs improves the feeding of the tissues of the body in general, which is why it increases the metabolism, stimulating at the same time the secretions of the digestive tract and liver, thus helping digestion.
Repeated bathing (especially in periods of 3 to 4 weeks) may help normalize the functions of the endocrine glands as well as the overall functioning of the autonomous nervous system of the body.
There is also an improvement and stimulation of the immune system, mental relaxation and production of endorphins as well as regulation of glandular functions. Many of these effects are due to the body’s consumption of minerals such as carbon dioxide, sulfur, calcium and magnesium.
There are skin diseases that can have a marked improvement over baths in hot springs (especially if they contain sulfur). The diseases that are benefitted the most are psoriasis, dermatitis and fungal diseases.
Sometimes they also help in healing wounds and other skin lesions. Sometimes this action is attributed to “sulfobacteria” (an organism isolated by the “International Society of Hydrological Medicine” to explain the effects of the “intangible elements” of the hot springs.)
Not too many years ago, a microorganism was isolated, studying precisely what are called “intangible elements” of the hot springs. The isolated organism belongs to what is now called “sulfobacteria”. This group of microorganisms helps the human body to improve the skin defense system against all types of aggression.