Does matcha cause constipation or diarrhea?

Matcha's Effects on Constipation

Matcha contains caffeine (approximately 35mg per teaspoon), a mild stimulant that may affect bowel function:

May relieve constipation: Caffeine can stimulate intestinal peristalsis, promoting bowel movements, especially benefiting those with mild constipation.
May worsen constipation: Excessive consumption (e.g., over 3–4 cups daily) may cause dehydration (caffeine has diuretic properties), reducing intestinal water content and potentially triggering or worsening constipation.
Other factors: Antioxidants like catechins in matcha generally aid digestion, but individual responses vary; sensitive individuals may experience discomfort.

Caffeine and catechins in matcha may accelerate intestinal activity:

May cause diarrhea: Caffeine stimulates intestinal contractions, and excessive intake (especially on an empty stomach) can lead to diarrhea, abdominal pain, or loose stools, particularly in caffeine-sensitive individuals.
General guidance: Moderate consumption (1–2 cups daily) rarely causes diarrhea, but additives like milk or sugar may exacerbate issues.
At-risk groups: Individuals with irritable bowel syndrome (IBS) or sensitive digestive systems are more susceptible.

Moderate intake: 1–2 cups of matcha daily is generally safe; avoid consuming on an empty stomach.
Precautions: Ensure adequate hydration (8 glasses of water daily) to counteract dehydration risks. Reduce intake or consult a doctor if constipation or diarrhea occurs.
Individual variability: Matcha itself isn’t a direct cause, but its components may exacerbate existing digestive issues. Track dietary responses to adjust habits.