Stomach and Intestine Day (Ichō no Hi)

What Is Stomach and Intestine Day?

December 11 is "Stomach and Intestine Day," established in 2002 by the Japan Self-Medication Industry Association (now the Japan OTC Drug Association) based on a wordplay combining "11 (ii/good)" with "ichō" (stomach and intestines), linked to December as the start of the busy year-end season. The day encourages people to take care of their digestive health and seek early medical attention during a season full of year-end parties and dining out.

Why Your Stomach Suffers at Year-End

• Overeating and overdrinking: Alcohol, rich food, and overeating during the year-end party season strain the digestive system
• Stress: End-of-year work pressure and social fatigue disrupt the autonomic nervous system, leading to stomach trouble
• Lack of sleep: Staying up late hinders digestive recovery
• Falling temperatures: Reduced blood flow to the intestines can slow peristalsis (intestinal movement)

Tips for Eating Gently on Your Stomach

• Chew thoroughly: Aim for about 30 chews per bite—saliva's amylase aids digestion
• Warm food and drinks: Keep your digestive system from cooling down and promote circulation
• Fermented foods: Natto, miso, yogurt, and pickles help balance your gut flora
• Dietary fiber: Vegetables, mushrooms, and seaweed support intestinal peristalsis
• The morning after drinking: Choose easy-to-digest foods like soup, rice porridge, or udon

Signs You Should See a Doctor

• Stomach pain or heartburn lasting more than two weeks
• Black or bloody stool
• Sudden, significant weight loss

Use Stomach and Intestine Day as a chance to check in on your digestive health and reset your lifestyle habits.