Most constipation responds well to a combination of dietary changes, more fluids, physical activity, and, when needed, an over-the-counter laxative. The key is addressing multiple factors at once rather than relying on a single fix. Here’s what actually works and why.
Eat More Fiber, but Know Which Kind
Fiber is the single most effective dietary tool for constipation, yet most people fall well short of what they need. The recommended daily intake is 25 grams for women under 50 (21 grams over 50) and 38 grams for men under 50 (30 grams over 50). The average American gets roughly half that.
Not all fiber works the same way. Insoluble fiber, found in whole wheat, nuts, and vegetables like cauliflower and green beans, adds bulk to stool and helps push material through your digestive tract. This is the type most directly linked to relieving constipation. Soluble fiber, found in oats, beans, apples, and citrus fruits, dissolves in water and forms a gel that slows digestion. It’s valuable for overall gut health, but insoluble fiber does more of the heavy lifting when you’re backed up.
The practical move is to increase fiber gradually over a week or two. Adding too much at once can cause bloating and gas, which makes the whole experience worse. A simple starting point: swap refined grains for whole grains, add a serving of vegetables to lunch and dinner, and snack on fruit or a small handful of nuts.
Drink Enough Fluids
Your colon absorbs water from digested food. When you’re not drinking enough, it pulls out more than usual, leaving stool hard and difficult to pass. Research in adults has confirmed that fluid deprivation reduces both the frequency of bowel movements and the weight of stool. One large study found that drinking less than 1.8 liters (about 7.5 cups) of fluid per day was independently associated with having fewer than three bowel movements per week.
Water is the simplest choice, but coffee, tea, broth, and water-rich foods like watermelon and cucumber all contribute. If you’re increasing fiber intake, extra fluid is especially important because fiber absorbs water as it moves through your gut. Without enough liquid, high-fiber foods can actually make constipation worse.
Move Your Body
Aerobic exercise stimulates the muscles in your intestinal wall, helping push stool along. Walking, jogging, cycling, and swimming are all effective. Even a daily 20 to 30 minute walk can noticeably improve bowel regularity. For sustained benefit, aim for at least 150 minutes of moderate-intensity aerobic exercise per week.
You don’t need intense workouts. A brisk walk after meals is one of the simplest and most reliable ways to get things moving, partly because upright movement combined with the natural digestive response after eating creates a window where your colon is most active.
Change Your Position on the Toilet
The standard sitting position on a Western toilet isn’t ideal for your anatomy. A muscle called the puborectalis wraps around your rectum like a sling, pulling it forward to create a tight angle that helps you stay continent. When you sit upright, that angle only partially relaxes. Squatting widens it significantly, creating a straighter path for stool to pass through.
You don’t need to squat on your toilet. Placing a small footstool (6 to 9 inches tall) under your feet and leaning slightly forward mimics the squat position well enough to make a real difference. Many people notice easier, more complete bowel movements the first time they try this.
Over-the-Counter Laxatives
When lifestyle changes aren’t enough, laxatives can help. The two most common types work differently, and choosing the right one depends on your situation.
Osmotic laxatives (like polyethylene glycol, sold as MiraLAX) pull water into your colon from surrounding tissue, softening stool so it’s easier to pass. They’re gentle and well-tolerated, but they take one to three days to work. This makes them a better choice for ongoing or recurring constipation rather than immediate relief.
Stimulant laxatives (like bisacodyl, sold as Dulcolax) activate the nerves controlling your colon muscles, forcing contractions that move stool along. They work faster, typically within 6 to 12 hours, and are useful for more stubborn episodes. However, they’re not meant for daily long-term use because your colon can become dependent on the stimulation.
A third option worth mentioning is fiber supplements like psyllium husk, which work similarly to dietary fiber by adding bulk and drawing water into stool. These are the gentlest option and safe for ongoing use. Follow the dosing instructions on the package for any laxative, and don’t exceed the recommended amount.
What About Probiotics?
Probiotic foods and supplements are often marketed for digestive health, but the evidence for constipation specifically is weak. A randomized controlled trial testing yogurt containing a well-studied probiotic strain (Bifidobacterium animalis) found no reduction in intestinal transit time compared to a control group. The probiotic successfully colonized the gut but didn’t make stool move through any faster. Probiotics may support overall digestive health for other reasons, but they’re not a reliable fix for constipation.
Quick-Relief Strategies
When you need relief now rather than over the coming days, a few approaches can help. Warm liquids, especially coffee, stimulate contractions in the colon. Drinking a cup of hot coffee or warm water first thing in the morning takes advantage of the gastrocolic reflex, a natural surge in colon activity triggered by your first meal or drink of the day. Gentle abdominal massage, pressing in a clockwise direction along the path of the colon (starting at your lower right abdomen, up, across, and down the left side), can also help move things along.
Glycerin suppositories offer another fast option. They lubricate the rectum and draw moisture into stool, usually producing a bowel movement within 15 to 60 minutes.
When Constipation Signals Something Serious
Occasional constipation is extremely common and rarely dangerous. But certain symptoms alongside constipation warrant urgent attention. Go to an emergency room if you haven’t had a bowel movement for a prolonged period and you’re experiencing major bloating or severe abdominal pain. Vomiting, blood in your stool, or unexplained weight loss are also warning signs that something beyond simple constipation may be going on, such as a bowel obstruction or another condition that needs medical evaluation.