Quitting Coffee Causes Constipation: Here's Why

The symptoms of caffeine withdrawal can go beyond fatigue and drowsiness — some Redditors say cutting coffee out caused constipation.

Coffee is among the most consumed beverages in the United States, with 62% of Americans drinking it daily. While the hot drink is best known for increasing energy and alertness, habitual coffee drinkers may also be at a lower risk of type 2 diabetes, several types of cancer, and heart disease.

Redditors suggest that coffee may have another health benefit that is less talked about — helping bowel movements.

One user said they intermittently cut coffee out due to its side effects, like nausea and sweating.

"But when I do cut it out, I can't poop," they wrote.

Another Redditor shared a similar experience of quitting caffeinated coffee — they almost immediately stopped pooping. However, consuming more fiber and water helped them kickstart bowel movement.

An effective bowel movement stimulant

Sandra Vigelienė, a health content researcher at Healthnews who holds a degree in Global Nutrition and Health, says coffee is known for stimulating colonic movements, promoting a compelling need to go to the bathroom almost immediately after being consumed. It works by affecting neural mechanisms, gastrointestinal hormones, and muscle stimulation.

She explains that caffeine and other compounds in coffee may affect specialized cells found in the layers of muscles of the digestive tract, especially near the nerve network that controls gut movements. Stimulation of these cells promotes muscle contractions in the digestive tract, increasing the need to relieve oneself.

"While a few compounds found in coffee may play a role in bowel function, caffeine is one of the highest contributors to the increased need to defecate. People who habitually drink coffee beverages may develop a physical and psychological dependence on it; thus, a sudden cessation of caffeine intake may promote withdrawal symptoms such as constipation," Vigelienė says.

How to relieve constipation

A person is considered constipated if they have fewer than three weekly bowel movements. Whether caused by coffee withdrawal or other reasons, constipation may lead to anxiety, depression, and cognitive impairment, significantly impacting the quality of life.

Vigelienė says people who wish to reduce their coffee intake should do it gradually and slowly to decrease the risk of withdrawal symptoms.

These lifestyle changes can also help maintain regular bowel movements and avoid constipation:

• Switching to drinks containing less caffeine, such as tea or matcha
• Staying well-hydrated
• Getting an adequate intake of dietary fiber found in vegetables, fruits, and whole grains
• Managing stress levels
• Staying physically active

Vigelienė adds, "Setting up a regular bathroom schedule, acknowledging the urge to go, and taking time in the bathroom without rushing are behavioral change techniques that may be helpful in supporting regular bowel movements."

The effects of coffee may vary from person to person, but it is always a good idea to consume it in moderation. A recent study suggests that drinking more than four cups of coffee a day for a prolonged period may increase the risk of cardiovascular disease.

Reducing coffee intake can cause constipation, especially in people with caffeine dependency. Fortunately, lifestyle changes like a fiber-rich diet, hydration, and exercise can help maintain regular bowel movements.