Most constipation resolves with a combination of dietary changes, more movement, and better bathroom habits. If you’re having fewer than three bowel movements a week, or your stools are consistently hard, lumpy, and difficult to pass, you’re dealing with constipation. The good news: simple interventions work for the majority of people, and you can start today.
Eat More Fiber (and the Right Kind)
Fiber is the single most recommended first step for constipation, and it works through two distinct paths depending on the type. Coarse insoluble fiber, like wheat bran, physically irritates the lining of the colon, triggering it to secrete water and mucus. Gel-forming soluble fiber, like psyllium, holds onto water and resists being dried out as stool moves through. Both mechanisms make stool softer, bulkier, and easier to pass.
Current dietary guidelines recommend 14 grams of fiber for every 1,000 calories you eat. For most adults, that works out to roughly 25 to 35 grams per day. The average American gets about half that. You don’t need to overhaul your diet overnight. Add fiber gradually over one to two weeks to avoid bloating and gas, and drink more water as you increase your intake. Without adequate fluid, fiber can actually make things worse.
Good sources include beans, lentils, whole grains, berries, broccoli, and pears. If you struggle to get enough from food alone, a psyllium-based supplement is well supported by evidence. In a head-to-head trial, psyllium (12 grams per day), green kiwifruit (two per day), and prunes (100 grams per day, roughly 10 prunes) all significantly increased bowel movement frequency over four weeks, with similar response rates across all three. Any of those is a reasonable daily addition.
Try an Over-the-Counter Laxative
When fiber alone isn’t enough, over-the-counter laxatives are the next step. They fall into three main categories, and understanding the differences helps you pick the right one.
- Bulk-forming laxatives (Metamucil, FiberCon, Citrucel) are essentially fiber supplements. They draw water into stool and increase its size, which stimulates the colon to contract. These are the gentlest option and safe for long-term use.
- Osmotic laxatives (MiraLAX, Milk of Magnesia) pull water from the rest of your body into the colon, softening stool so it passes more easily. MiraLAX is one of the most commonly recommended options. The standard dose is 17 grams once daily, mixed into a beverage. Don’t use it for more than seven days without guidance from a provider.
- Stimulant laxatives (Dulcolax tablets, senna) activate the nerves controlling your colon muscles, forcing contractions that move stool along. These work faster but are meant for occasional use, not daily reliance. They can cause cramping.
If you need quick relief, a stimulant laxative or glycerin suppository typically works within hours. For a gentler, more sustained approach, start with an osmotic laxative like MiraLAX and give it two to three days.
Move Your Body
Physical activity speeds up the time it takes for food to travel through your digestive tract. Research using accelerometers found that for every additional hour spent doing brisk, light-intensity activity (think a purposeful walk, gardening, or active housework), colon transit time dropped by about 25%. That association held regardless of age, sex, or body fat. Interestingly, sedentary behavior and even moderate-to-vigorous exercise didn’t show the same clear link. The sweet spot appears to be consistent, moderate movement throughout the day rather than one intense gym session.
A daily 30-minute walk is a simple starting point. If you sit for long stretches at work, breaking that up with short bouts of movement may help more than you’d expect.
Change Your Position on the Toilet
The angle of your body on the toilet matters more than most people realize. When you sit on a standard toilet, the muscle that wraps around your rectum (the puborectalis) maintains a natural bend of about 100 degrees, which partially kinks the passage. When you squat, that angle opens to roughly 126 degrees, straightening the path and reducing the need to strain.
You don’t need to squat on your toilet. A small footstool that raises your knees above your hips achieves a similar effect. Lean forward slightly, keep your feet flat on the stool, and let gravity do more of the work. Many people notice a difference on the first try.
Probiotics: Helpful but Not a Cure
Probiotics modestly improve constipation symptoms. A meta-analysis published in BMJ Open found that people taking probiotic products had about one additional bowel movement per week compared to placebo, along with slightly softer stool. Multi-strain products performed better than single-strain ones, and synbiotics (probiotics combined with prebiotics) outperformed probiotics alone.
Strains with the most research behind them for constipation include Bifidobacterium lactis (strains HN019 and NCC2818) and Bifidobacterium longum BB536. That said, the overall quality of evidence is still low, and results vary from person to person. Probiotics are worth trying as part of a broader approach, but they’re unlikely to solve constipation on their own.
Build Better Bathroom Habits
Your colon is most active in the morning and after meals, thanks to a reflex triggered by eating called the gastrocolic reflex. Taking advantage of this natural timing helps. Try sitting on the toilet for five to ten minutes after breakfast each day, even if you don’t feel an urgent need. Over time, this trains your body into a more regular pattern.
Equally important: don’t ignore the urge when it comes. Repeatedly putting off a bowel movement allows the colon to absorb more water from stool, making it harder and more difficult to pass later.
When Constipation Becomes a Concern
Occasional constipation is normal, especially during travel, after changes in routine, or with certain medications (painkillers, iron supplements, and some blood pressure drugs are common culprits). But constipation that lasts longer than three weeks, comes with blood in your stool, or causes severe abdominal pain warrants a visit to your provider. Unexplained weight loss paired with a change in bowel habits is another signal worth taking seriously.
Chronic constipation, defined as symptoms present for at least six months, affects roughly 15% of adults. It’s diagnosed when at least two of the following happen more than a quarter of the time: straining, hard or lumpy stools, a feeling of incomplete emptying, a sensation of blockage, or needing to use your hands to help. If over-the-counter options haven’t worked after a few weeks of consistent use, prescription treatments are available that work through different mechanisms than what you can buy at a pharmacy.