Can people with asthma use onsen?

Mild, stable asthma is generally safe. Severe asthma and acute attacks are contraindications. Start with gentle, low-stimulation springs (e.g. simple springs) and always get medical approval first.

Mild Asthma & Emphysema | Onsen Bathing and Respiratory Function

Applicable spring types

10 types

Analysis records

36 records

Hydrostatic water pressure on the chest during bathing provides resistance training for the diaphragm and intercostal muscles. Warm, humid air softens airway mucus, facilitating expectoration. Sulfur springs and carbon dioxide springs deliver inhaled components that may have additional airway effects.

Related Onsen Facilities

Chloride Spring

Sulfate Spring

Simple Spring

Bicarbonate Spring

Sulfur Spring

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References

Explore Spring Types for This Condition

Simple Springs (Tanjun Onsen): Gentle Waters for Everyone →Chloride Springs: Benefits, Indications & Recommended Onsen →Bicarbonate Springs: "Beauty Waters" for Smooth, Glowing Skin →Sulphate Springs: "The Healing Waters" for Wounds, Skin & Digestion →Sulphur Springs: Milky White Waters with Powerful Skin Benefits →

SYMPTOMSMay 6, 2026· 1min read

Post-Illness Recovery & Onsen | Thermal Therapy to Restore Vitality

Post-illness recovery (convalescence) carries a general bathing indication across all 10 Japanese spring types. Thermal promotion of metabolism, elimination of fatigue metabolites, and autonomic normalisation together support recovery of vitality and immune function — the traditional Japanese "toji" therapeutic stay.

SYMPTOMSMay 6, 2026· 1min read

Hot Springs for Fatigue Recovery | All 10 Spring Types

Fatigue recovery and health promotion are general bathing indications recognised across all 10 Japanese hot spring types, from simple springs to radioactive springs. Three physical mechanisms — thermal, hydrostatic, and buoyancy — work together to flush metabolic waste, reduce swelling, and deeply relax muscles regardless of mineral content.

SPRING TYPEMay 5, 2026· 1min read

Simple Springs (Tanjun Onsen): Gentle Waters for Everyone

Simple springs have dissolved components below 1,000 mg/kg and a source temperature of 25°C or above. Mild and non-irritating, they are safe for all ages. Alkaline simple springs (pH 8.5+) are famous for leaving skin silky smooth.