Most people deal with sluggish bowels at some point, and the fixes are usually straightforward: adjust what you eat and drink, move your body, and change how you sit on the toilet. These strategies work because they target the actual mechanics of digestion, from how quickly food moves through your colon to how easily stool passes out. Here’s what actually helps, starting with the changes that make the biggest difference.
Eat More Fiber (but the Right Kind)
Fiber is the single most effective dietary tool for keeping things moving. It works through a few different mechanisms depending on the type. Insoluble fiber, the kind found in wheat bran, whole grains, and vegetable skins, adds physical bulk to stool and pushes it through your colon faster. Soluble fiber, found in oats, beans, and fruits, absorbs water and forms a gel that softens stool and makes it easier to pass.
Psyllium husk (the main ingredient in Metamucil) is especially effective because it combines gel-forming and bulking properties, pulling water into the colon and increasing both moisture and volume in your stool. Research from the American Academy of Family Physicians suggests a dose above 10 grams per day for at least four weeks to treat chronic constipation. Start with a smaller amount and increase gradually over a week or two, because adding too much fiber too fast causes bloating and gas. You also need to drink plenty of water alongside fiber supplements. Without enough fluid, fiber can actually make things worse and, in rare cases with very slow digestion, increase the risk of a blockage.
Good whole-food sources of fiber include lentils, black beans, raspberries, pears, broccoli, oats, and flaxseed. Most adults should aim for 25 to 30 grams of fiber per day, but the average intake is closer to 15.
Foods That Act as Natural Laxatives
Prunes are the classic recommendation for a reason. They contain sorbitol, a sugar alcohol your body doesn’t fully absorb. Sorbitol draws water into the intestines, softening stool in much the same way an osmotic laxative does. A clinical trial published in the American Journal of Gastroenterology found that about 54 grams of prune juice per day (roughly a quarter cup) over eight weeks improved hard stools and regularity. You don’t need much. Five or six whole prunes, or a small glass of prune juice, is a reasonable daily amount.
Kiwifruit is another standout. Two kiwis a day have been shown in multiple trials to increase bowel movement frequency, likely due to their combination of fiber, water content, and a natural enzyme that aids digestion. Other helpful foods include figs, flaxseed mixed into yogurt or oatmeal, and cooked leafy greens like spinach.
Drink Enough Water
Dehydration is one of the most overlooked causes of hard, difficult-to-pass stools. When your body is low on fluids, your colon absorbs more water from waste material, leaving stool dry and compacted. General guidance is to drink eight to ten glasses of fluid per day to help prevent constipation. Water is ideal, but herbal tea, broth, and water-rich fruits count too. If you’re increasing your fiber intake, bumping up your fluid intake at the same time is essential.
Try Coffee in the Morning
Coffee triggers the urge to have a bowel movement in roughly one-third of people, and the effect is fast. Research shows that coffee stimulates muscle contractions in the lower colon within as little as four minutes of drinking it. This happens with both caffeinated and decaf coffee, so it’s not just a caffeine effect. Something in coffee itself activates the gastrocolic reflex, the wave of contractions your digestive system uses to make room for incoming food. If you’re one of the people coffee affects this way, drinking a cup in the morning and then sitting on the toilet shortly after is one of the simplest habits you can build.
Move Your Body Regularly
Physical activity speeds up the time it takes food to travel through your colon. Exercise stimulates the nervous system that controls your gut’s muscular contractions, essentially giving your intestines a nudge to keep things moving. The standard recommendation is 150 minutes of moderate activity per week, which breaks down to about 30 minutes five days a week. Walking counts. A study on people with irritable bowel syndrome found that 20 to 60 minutes of moderate-to-vigorous activity three to five times per week significantly improved symptoms after 12 weeks. Even a 15-minute walk after a meal can help stimulate digestion.
Change Your Position on the Toilet
The way you sit matters more than most people realize. When you sit on a standard toilet with your thighs at a 90-degree angle, a muscle called the puborectalis creates a kink in the pathway between your rectum and the outside. This kink exists to help you maintain continence when you’re upright, but it works against you when you’re trying to go.
Squatting straightens that pathway significantly. A study measuring the angle of the rectal canal found it widened from about 100 degrees in a normal sitting position to 126 degrees while squatting. That straighter path means less straining. You don’t need to squat on the toilet rim. A small footstool (like a Squatty Potty or any 7- to 9-inch step) placed in front of the toilet raises your knees above your hips and mimics the squatting position. Lean forward slightly with your elbows on your knees for the best effect.
Over-the-Counter Laxatives
When lifestyle changes aren’t enough, laxatives can help in the short term. They fall into three main categories, each with a different speed and mechanism.
- Bulk-forming laxatives (like psyllium or methylcellulose) work the same way dietary fiber does, by absorbing water and adding bulk to stool. They take two to three days to work and are the gentlest option for regular use.
- Osmotic laxatives (like polyethylene glycol, sold as MiraLAX) draw water into the intestines to soften stool. They also take two to three days to produce results.
- Stimulant laxatives (like bisacodyl or senna) directly trigger contractions in your colon. They work within 6 to 12 hours and are best used occasionally rather than daily, since your gut can become dependent on them over time.
For most people, starting with a bulk-forming or osmotic laxative is the safest approach. Stimulant laxatives are useful for occasional relief but shouldn’t be your default.
What About Probiotics?
Probiotics are widely marketed for digestive health, but the evidence for constipation relief is mixed. A randomized controlled trial in children with constipation tested a fermented dairy product containing Bifidobacterium lactis, one of the most commonly studied strains. Both the probiotic group and the placebo group saw similar improvements in stool frequency, and the difference was not statistically significant. That doesn’t mean probiotics are useless for gut health broadly, but they’re not a reliable fix for constipation based on current evidence. Yogurt and fermented foods are fine to include in your diet, just don’t count on them as your primary strategy.
Signs Something More Serious Is Going On
Occasional constipation is normal and rarely dangerous. But certain symptoms alongside constipation point to something that needs medical attention: unintentional weight loss, blood in your stool, iron-deficiency anemia, or constipation that starts for the first time after age 50. Severe constipation that doesn’t respond to any of the strategies above also warrants a visit. A family history of colorectal cancer, inflammatory bowel disease, or celiac disease is another reason to get checked rather than managing symptoms on your own.