Yes, coffee can act as a laxative for some people due to its caffeine content and ability to stimulate bowel movements.
For many people, coffee does more than just wake them up—it also gets their bowels moving. But why does coffee have this effect, and is it the same for everyone? Let’s explore the science behind coffee’s laxative properties.
Why Coffee Stimulates Bowel Movements
Coffee can trigger bowel movements in as little as four minutes after drinking it. This isn’t just a coincidence—it’s backed by science. Here’s how it works:
Caffeine and Gut Hormones
Coffee stimulates the release of two key hormones that affect digestion:
- Gastrin – Increases contractions in the stomach and colon.
- Cholecystokinin (CCK) – Promotes bile production and speeds up digestion.
These hormones enhance peristalsis, the wave-like muscle contractions that move food through your digestive tract.
Decaf Coffee Also Has an Effect
Surprisingly, even decaffeinated coffee can stimulate bowel movements. This suggests that other compounds in coffee, such as:
- Chlorogenic acids
- Melanoidins
- Natural acids
…also contribute to its laxative effect.
How Much Stronger Is Caffeinated Coffee?
Research shows that caffeinated coffee has a more significant impact than decaf:
| Beverage | Colon Stimulation Compared to Water |
|---|---|
| Caffeinated Coffee | 60% stronger |
| Decaf Coffee | 23% stronger |
Why Morning Coffee Has a Stronger Effect
Your digestive system is most active in the morning due to the gastrocolic reflex, which triggers bowel movements when you eat or drink. Drinking coffee first thing amplifies this effect.
If you’re looking for a morning routine that supports digestion, pairing coffee with a nutrient-packed smoothie can be a great way to start your day.
Does Adding Cream or Sugar Make a Difference?
Yes! Dairy products like milk or cream can intensify coffee’s laxative effect if you’re lactose intolerant (which affects about 65% of people). Artificial sweeteners may also contribute to loose stools.
Common Additives That May Increase Bowel Movements
- Lactose (in milk/cream)
- Artificial sweeteners (sorbitol, mannitol)
- High-fat creamers
When Coffee’s Laxative Effect Becomes a Problem
While coffee-induced bowel movements are normal for many, excessive urgency or diarrhea could indicate:
- Irritable Bowel Syndrome (IBS)
- Lactose intolerance
- Sensitivity to coffee acids
If coffee causes discomfort, switching to a gentler option like cold-pressed juices may help maintain regularity without irritation.
How to Reduce Coffee’s Laxative Effect
If coffee sends you running to the bathroom too often, try:
- Switching to low-acid coffee or dark roast (less acidic).
- Drinking it with food to slow digestion.
- Opting for plant-based creamers if lactose intolerant.
- Gradually reducing caffeine intake.
For those who enjoy coffee but want alternatives, exploring healthy coffee substitutes may help.
Final Thoughts
Coffee’s ability to stimulate bowel movements is well-documented, thanks to its impact on gut hormones and muscle contractions. While this effect is harmless for most, those with digestive sensitivities may need to adjust their coffee habits.
If you’re looking for other digestive-friendly beverages, consider herbal teas or warm lemon water, which can also support regularity without the caffeine kick.
