Several common food categories can make hemorrhoids worse, mostly by causing constipation, hardening stool, or pulling water out of your digestive system. The short list: refined grains, red and processed meats, dairy, fast food, alcohol, and caffeine. All of them either lack fiber, dehydrate you, or both, which forces you to strain during bowel movements and puts direct pressure on the swollen veins around your rectum.
Why Certain Foods Trigger Flare-Ups
Hemorrhoids swell and become painful when there’s too much pressure on the veins in your lower rectum. The most common source of that pressure is straining on the toilet, and straining almost always traces back to hard, dry stool that won’t pass easily. Your large intestine absorbs water as stool moves through it. When your diet is low in fiber or you’re not drinking enough fluids, the intestine pulls extra water from the stool, leaving it compact and difficult to push out. That repeated pushing increases abdominal pressure, which inflames hemorrhoids or creates new ones.
So the foods that make hemorrhoids worse aren’t irritating the hemorrhoids directly. They’re creating the conditions (constipation, dehydration, prolonged sitting on the toilet) that put mechanical stress on those veins.
Refined Grains and Processed Starches
White rice, white pasta, white bread, bagels, biscuits, pancakes, waffles, saltines, and graham crackers are all made from refined flour that’s been stripped of its fiber content. Fiber is what holds water in your stool and adds the bulk that lets it pass smoothly. Without it, you get smaller, harder stools and fewer bowel movements. If your meals are built around refined grains, you’re consistently under-fueling your digestive system.
The federal dietary guidelines recommend 14 grams of fiber per 1,000 calories you eat. For most adults, that works out to somewhere between 25 and 35 grams a day. More than 90% of women and 97% of men in the U.S. fall short of that target. Swapping refined grains for whole-grain versions is one of the simplest ways to close the gap.
Red Meat and High-Protein, No-Fiber Diets
Meat contains zero fiber. A steak, a burger patty, or a chicken breast contributes protein and fat to your meal but nothing that helps move stool through your intestines. Eating meat alongside vegetables and whole grains isn’t a problem. The issue starts when meat dominates your plate and crowds out fiber-rich foods.
This is why all-meat diets are strongly linked to constipation and hemorrhoid development. Without any plant-based food, your digestive system slows down. Stool sits longer in the colon, loses more water, and becomes harder to pass. If you eat a lot of red meat, balancing each meal with a generous serving of vegetables, legumes, or whole grains can offset the effect.
Processed and Fast Food
The National Institute of Diabetes and Digestive and Kidney Diseases specifically calls out several processed food categories as hemorrhoid triggers: chips, fast food, frozen snack foods, hot dogs, and microwavable dinners. These products tend to be low in fiber, high in sodium (which promotes water retention in the wrong places while drying out your stool), and high in fat, which slows digestion.
The convenience factor makes processed food easy to default to for multiple meals a day, and that’s when the cumulative fiber deficit starts causing problems. A single fast food meal won’t trigger a hemorrhoid flare on its own, but a pattern of eating this way steadily shifts your bowel habits toward constipation.
Dairy Products
Cheese and ice cream appear on most lists of foods to limit when you have hemorrhoids. Both are high in fat, contain no fiber, and can slow intestinal movement. For people with any degree of lactose sensitivity, dairy can also cause alternating constipation and diarrhea, both of which irritate hemorrhoids. Full-fat cheese in particular is dense and slow to digest, which contributes to harder stool when it makes up a significant portion of your diet.
Alcohol and Caffeine
Alcohol increases urine production, which pulls fluid away from your digestive tract. When your body is short on water, the large intestine compensates by absorbing extra moisture from stool. The result is the same dry, hard stool that leads to straining. Even moderate drinking can shift your hydration balance enough to make a difference if you’re already prone to hemorrhoid symptoms.
Caffeine works through a similar dehydration pathway. Coffee and energy drinks are mild diuretics, meaning they increase the volume and frequency of urination. If you’re not replacing that lost fluid with water, your stool dries out. Cutting down on both alcohol and caffeine is one of the standard lifestyle changes recommended for preventing hemorrhoid flares.
Spicy Foods
Spicy foods don’t cause constipation, but they can irritate the lining of your digestive tract on the way out. If you already have inflamed hemorrhoids, capsaicin and other irritating compounds in hot peppers may increase burning, itching, and discomfort during bowel movements. This varies from person to person. Some people tolerate spicy food without issue even during a flare-up, while others find it significantly worsens their symptoms. If you notice a pattern, it’s worth dialing back the heat until things calm down.
The Role of Fiber and Fluids
Understanding what makes hemorrhoids worse also means understanding what makes them better, because the fix is essentially the mirror image of the problem. Fiber comes in two forms, and both matter. Insoluble fiber, found in whole wheat, vegetables, and nuts, doesn’t break down during digestion. It holds onto water and adds bulk and softness to stool, which is why it’s specifically linked to preventing both hemorrhoids and other conditions like diverticulosis. Soluble fiber, found in oats, beans, and fruits, dissolves into a gel-like consistency that helps stool move smoothly.
If you’re currently eating very little fiber, increase your intake gradually. Adding too much too fast can cause gas and bloating, which creates its own abdominal pressure and discomfort. A good approach is to add one new high-fiber food every few days and let your gut adjust.
Fiber only works if you’re drinking enough water. Fiber draws water into the bowel to soften stool, so eating more fiber without increasing your fluid intake can actually make constipation worse. Aim for 8 to 10 glasses of fluid per day, primarily water. This is especially important if you’re also cutting back on alcohol and caffeine, since your body may need time to recalibrate its hydration.
What Improvement Looks Like
Dietary changes won’t shrink a hemorrhoid overnight, but they address the root cause of most flare-ups. Once you’re consistently eating enough fiber and staying hydrated, your stools should become softer and easier to pass within a few days to a couple of weeks. Less straining means less pressure on the hemorrhoidal veins, which allows inflammation to gradually subside. Many mild to moderate hemorrhoids resolve entirely once the cycle of constipation and straining is broken.
The foods to limit aren’t foods you need to eliminate permanently. The goal is to make sure your overall dietary pattern includes enough fiber and fluid to keep your bowel movements soft and regular. A slice of white bread or a cup of coffee isn’t going to cause a hemorrhoid. A daily diet built around refined grains, processed meat, cheese, and alcohol with minimal vegetables or water very well might.