Which onsen is best for a sensitive stomach?

Carbon dioxide springs with drinking facilities are especially noted for gastrointestinal function. All 10 types carry a bathing indication. Avoid bathing within 1–2 hours of a meal.

Poor Gastrointestinal Function & Onsen | Carbon Dioxide Springs Explained

Applicable spring types

10 types

Analysis records

36 records

Why onsen bathing helps the digestive system

The thermal effect of onsen bathing shifts the nervous system toward parasympathetic dominance, activating intestinal peristalsis. All spring types carry a bathing indication for gastrointestinal function. Carbon dioxide springs are specifically indicated for drinking: absorbed CO₂ stimulates gastric mucosa, promoting acid secretion and motility.

Related Onsen Facilities

Chloride Spring

Simple Spring

Bicarbonate 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· 2min read

Drinking Spring Water for Constipation | Chloride, Sulfate & Bicarbonate Springs

Chloride, sulphate, and bicarbonate springs are officially recognised for drinking indications targeting constipation and reduced gastrointestinal function. Their mineral constituents act directly on the intestinal tract to stimulate peristalsis.

SYMPTOMSMay 6, 2026· 1min read

Gastric & Duodenal Ulcers | Bicarbonate Spring Drinking Indication Explained

Japan's Ministry of the Environment recognises bicarbonate springs as having a drinking indication for gastric and duodenal ulcers. Bicarbonate ions (HCO₃⁻) neutralise excess gastric acid and soothe inflamed mucosa. Note: active or bleeding ulcers are a contraindication. Always consult your doctor.