Health benefits and bathing etiquette
Balneotherapy, the use of bathing as a form of medical treatment, is widely practiced in Japan. Although generally considered an “alternative medicine”, balneotherapy’s benefits have been demonstrated by global peer-reviewed medical studies. The chemistry, temperature, pressure and buoyancy of thermal baths have curative properties used to treat skin conditions such as dermatitis, inflammation-related conditions such asarthritis and musculoskeletal conditions such as lower back pain.
The sulfur and magnesium found in hot springs promotes skin health, while the heat of these baths can reduce inflammation and pain, and boost the immune system. Japanese onsen must be at least 25C, though some get as hot as 100C.
Onsen bathing is an important part of Japanese culture, and proper etiquette is well-established. The following tips should help you through your first experience.