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

3 Spring Types with Drinking Indications for Constipation

Japan's Ministry of the Environment lists three spring types with drinking indications for reduced gastrointestinal function (constipation). Each type's active mineral components act directly on the intestinal tract.

• Chloride springs (drinking): Salt stimulates gastrointestinal secretion and intestinal motility — historically used as a "drinking cure"
• Sulphate springs (drinking): Sulphate ions (SO₄²⁻) stimulate intestinal mucosa and promote peristalsis; sodium sulphate springs are especially noted for constipation
• Bicarbonate springs (drinking): Bicarbonate ions (HCO₃⁻) protect gastrointestinal mucosa while normalising digestive function; also beneficial for constipation associated with acid reflux or gastritis

How to drink spring water and key precautions

• Only drink at facilities that permit it; always follow facility instructions
• Typical guidance: ~150–200 mL per serving, 2–3 times a day, 30 minutes before meals
• Start with a small amount (~50 mL) on your first attempt
• Excessive drinking of high-sodium springs (chloride) may raise blood pressure
• Stop immediately and consult a doctor if diarrhoea or abdominal pain occurs

Combined effect of drinking and bathing

Beyond the direct intestinal action of drinking, bathing activates the parasympathetic nervous system (the relaxation response), which also supports gut motility via the autonomic nervous system. Combining rest at a hot spring resort with drinking therapy may be an effective approach for chronic constipation.