Some hot springs are rich in minerals beneficial to health because they come from deep underground water tables that enrich them with minerals during their geothermal journey, including elements such as sulfur, magnesium, calcium, and selenium, which can have beneficial effects on human health.
The minerals in hot springs mainly come from the underground rocks through which the water flows. When rainwater or melted snow penetrates underground, it seeps deep and heats up due to the proximity of the magma. Under the effect of heat and pressure, it gradually dissolves the mineral elements present in the rocks it passes through. Basalt, granite, or limestone... each type of rock provides the water with a unique mix of useful minerals such as sulfur, silicon, magnesium, or calcium. That's why the hot spring you find in Iceland doesn't necessarily resemble those in Japan or elsewhere: it all depends on the rock layers encountered by the water beneath the surface.
It all begins with rainwater slowly seeping into the ground. As it infiltrates, it passes through rocks and naturally enriches itself with minerals thanks to the intense heat that dissolves the present elements. Deep underground, high temperatures and pressure accelerate chemical reactions, thus facilitating the dissolution of minerals such as sulfur, calcium, magnesium, and silica. After this underground stay, the water rises to the surface through geological cracks and faults, laden with these precious minerals, ready to offer all its benefits to those who come to enjoy it.
In hot springs, certain key minerals often reappear. Sulfur, easily recognizable by its typical rotten egg smell, is predominantly found but is rather beneficial for the skin. Silicon is also very common, useful for strengthening skin, hair, and joints. Other regulars include calcium and magnesium, champions of muscle relaxation and overall relaxation. Let's not forget the various traces of trace elements like iron, manganese, and lithium, each providing its little health bonus to these naturally therapeutic waters.
The composition of soils and rocks that water passes through directly affects its mineral richness: a volcanic soil will often provide more sulfur, while a limestone soil will enrich the waters with calcium and magnesium. Volcanic activity is a great ally of particularly rich hot springs, releasing very beneficial elements like silica, known for promoting healthy skin. Additionally, the contact time with the rock plays a role: the longer water is in prolonged contact with underground layers, the more time it has to become saturated with minerals. Finally, the presence of frequent rainfall in a region can dilute these minerals, whereas in arid regions, they remain highly concentrated, giving springs intense benefits.
The minerals present in hot springs often enhance the circulatory system by stimulating blood circulation, which helps reduce the sensation of heavy legs and swelling. Some, like sulfur, have a beneficial effect on the skin, effectively alleviating issues such as psoriasis, eczema, or acne. The magnesium contained in these thermal waters is valued for relaxing muscles and soothing joint pain, providing much-appreciated physical relief. Many minerals also have a calming effect on stress and can even promote better sleep. Finally, the moderate absorption of these elements through the skin overall strengthens natural defenses, gives a boost to the immune system, and sustainably improves general health.
The famous thermal spring of Pamukkale in Turkey derives its spectacular appearance, resembling a castle of white cotton, from the continuous accumulation of calcium carbonate from the mineral waters.
Magnesium, a mineral commonly found in hot spring waters, is known for its muscle-relaxing properties, helping to reduce stress and promote sleep.
Balneotherapy, the therapeutic use of mineral-rich thermal waters, was already practiced in antiquity by the Romans, Greeks, and Egyptians for its dermatological and anti-inflammatory properties.
The characteristic color of certain hot springs, like those in Yellowstone, actually comes from a complex ecosystem where temperature-tolerant microorganisms exploit dissolved minerals to survive.
Sure! Here’s the translation: "Yes, some people may have an increased sensitivity to specific minerals. Additionally, prolonged use can dry out the skin. It is best to consult a healthcare professional before intensive use, especially if you have any particular skin or medical issues, or if you are pregnant."
The most common minerals found in beneficial hot springs are sulfur, bicarbonate, magnesium, calcium, potassium, sodium, and silicon. Each of these minerals has recognized properties that enhance general well-being and address specific skin issues.
Generally, water that comes directly from hot springs is not always safe to drink. Although some thermal waters can be consumed for internal treatment (after a safety analysis confirming the absence of contaminants), it is essential to verify their potability with the relevant health authorities beforehand.
Yes, the skin has a certain capacity to absorb minerals, particularly those found in mineral-rich hot waters. This skin absorption, although not quantitatively significant, can nonetheless have a beneficial effect on specific health issues and enhance well-being, especially when used regularly in thermal baths.
No, not all hot springs necessarily have the same variety or concentration of beneficial minerals. The mineral composition varies according to local geology, temperatures, and chemical interactions at depth with the surrounding rocks.
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