Dr. Doan Thu Hong, from the Vietnam Institute of Applied Medicine, states that the value of hot spring bathing lies in its combination of thermotherapy, hydrotherapy, and mineral therapy. Immersing oneself in water between 38 and 42 degrees C increases body temperature, which dilates blood vessels and stimulates circulation. This enhanced blood flow more effectively delivers oxygen and nutrients to tissues. This thermal effect also activates the parasympathetic nervous system, reducing cortisol, the body's stress hormone. Consequently, the nervous system finds relief, heart rate stabilizes, and the body can achieve easier and deeper sleep.
Natural mineral sources containing sulfur, magnesium, sodium chloride, and carbonic gas offer notable biological benefits. Carbonic-rich mineral water aids peripheral vasodilation, while sulfur and magnesium, with their antibacterial and anti-inflammatory properties, help soothe symptoms of psoriasis, eczema, and seborrheic dermatitis.
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Onsen mineral hot springs provide benefits through thermotherapy, hydrotherapy, and mineral therapy mechanisms. Photo: Ha Phuong |
Onsen mineral hot springs provide benefits through thermotherapy, hydrotherapy, and mineral therapy mechanisms. Photo: Ha Phuong
Beyond heat and minerals, water's buoyancy plays a key role, capable of neutralizing up to 90% of body weight when immersed up to the neck. This phenomenon completely relieves pressure on the spine and relaxes constricted muscle groups in the shoulders, neck, and lower back. For individuals requiring post-injury rehabilitation, the aquatic environment provides favorable conditions for gentle movement without imposing secondary stress on the musculoskeletal system.
A 2021 study published in the journal Inquiry, involving nearly 1,300 participants, reported that 83% experienced reduced joint and muscle pain after mineral bathing.
To ensure safety, mineral bathing facilities must maintain continuous ventilation systems to prevent the accumulation of toxic hydrogen sulfide gas from underground. A natural overflow method, which avoids water reuse, is also strictly applied to preserve mineral purity and prevent cross-contamination.
Today, the application of artificial mineralization and temperature control solutions in urban areas allows people to easily access mineral bathing therapy in their living environments. This transforms the practice into an active, convenient, and daily method for relaxation and health recovery.
Le Nga
