The foods most likely to worsen hemorrhoids are those that lead to constipation, hard stools, or straining during bowel movements. The American Society of Colon and Rectal Surgeons identifies dietary modification as the primary first-line therapy for hemorrhoid symptoms, with increased fiber and fluid intake recommended for all patients. That means the foods to limit are largely the ones that work against those two goals.
Refined Grains and White Flour Products
White bread, white pasta, white rice, and pastries made from refined flour are some of the biggest contributors to hemorrhoid flare-ups. When wheat is processed into white flour, the bran and germ are stripped away. These are the parts of the grain that contain fiber. What’s left is essentially a low-fiber product that produces hard, dense stools with less bulk. Less bulk means your intestines have to squeeze harder to move things along, and you’re more likely to strain on the toilet.
Swapping refined grains for whole-grain versions is one of the simplest changes you can make. Whole wheat bread, brown rice, oats, and quinoa all retain their natural fiber. Current dietary guidelines recommend about 14 grams of fiber for every 1,000 calories you eat per day, which works out to roughly 25 to 35 grams for most adults. If your diet is heavy on refined carbohydrates, you’re likely falling well short of that.
Red Meat and High-Protein Meals
Red meat doesn’t “sit in your gut” the way popular belief suggests. In a normal diet, meat completes its journey through the digestive system in 12 to 48 hours, just like everything else. But a high-protein diet does create a specific problem: breaking down large amounts of protein produces ammonia, which your kidneys flush out as urea. That process uses extra water. If you don’t drink more to compensate, the dehydrating effect can lead to constipation.
Red meat also contains zero fiber. A meal built around a large steak with a side of white bread and no vegetables is essentially a fiber-free meal that also pulls water from your system. The issue isn’t that red meat is toxic to hemorrhoids. It’s that it tends to crowd fiber-rich foods off the plate while contributing to harder stools.
Alcohol
Alcohol affects hemorrhoids through two separate pathways. First, it’s a diuretic, meaning it increases urine output and pulls fluid from your body. When you’re dehydrated, your large intestine compensates by absorbing extra water from stool as it passes through. The result is dry, hard stool that requires more straining to pass, and straining is the single most direct cause of hemorrhoid swelling.
Second, heavy alcohol consumption raises blood pressure. The veins around the anus are already under pressure from gravity and sitting. When blood pressure climbs, those vessels are more likely to swell and become inflamed. This combination of constipation and vascular pressure makes alcohol one of the more impactful dietary triggers for hemorrhoid symptoms. You don’t necessarily need to eliminate it entirely, but cutting back during a flare-up can make a noticeable difference.
Caffeine in Large Amounts
Caffeine has a complicated relationship with hemorrhoids. In moderate amounts, coffee can actually stimulate bowel contractions and help keep things moving. But in large quantities, caffeine acts as a mild diuretic, contributing to dehydration the same way alcohol does. If you’re drinking multiple cups of coffee or energy drinks throughout the day without matching that intake with water, the net effect can be harder stools and more straining. The key is balance: a cup or two of coffee paired with adequate water intake is unlikely to cause problems, but relying on caffeinated drinks as your primary fluid source works against you.
Dairy Products in Excess
Dairy contains no fiber and is rich in protein and fat, both of which slow stool transit. A diet heavy in cheese, whole milk, and ice cream without enough fruits, vegetables, or whole grains to balance it out can lead to firmer, harder-to-pass stools. This doesn’t mean you need to cut dairy completely, especially since it provides calcium and protein. But if constipation is already a problem, reducing your intake of high-fat dairy products while increasing fiber-rich foods can help soften stools and reduce straining.
Spicy Foods May Not Be the Problem
Despite being one of the most commonly cited triggers, spicy food may not actually deserve its reputation. A clinical study published in Diseases of the Colon & Rectum found no scientific evidence that a spicy meal based on chili pepper worsens hemorrhoid symptoms. The researchers noted that the long-standing medical advice to avoid spicy food “seems to be based essentially on empirical cultural and traditional bases rather than scientific evidence.” Their results showed that moderate use of chili pepper during a meal had no effect on hemorrhoidal symptoms.
That said, some people do notice increased burning or discomfort after eating very spicy food, particularly if they already have irritated tissue. If spicy meals consistently bother you, it’s reasonable to reduce them during a flare-up. But if you enjoy spicy food and it doesn’t seem to make things worse, there’s no clinical reason to avoid it.
What Matters More Than Any Single Food
Hemorrhoid symptoms are driven less by individual “bad” foods and more by the overall pattern of your diet. A low-fiber, low-fluid diet creates hard stools and straining regardless of what specific foods you eat. The American Society of Colon and Rectal Surgeons recommends increased fiber and fluid intake for all hemorrhoid patients because it improves both mild-to-moderate prolapse and bleeding. They also recommend avoiding straining and limiting time sitting on the toilet, since both behaviors increase pressure on the anal veins.
Practically, this means building meals around vegetables, fruits, legumes, and whole grains while treating the foods listed above as things to moderate rather than eliminate. Drinking enough water throughout the day is just as important as the food itself, since fiber works by absorbing water and adding bulk to stool. High fiber without adequate fluid can actually make constipation worse. Aim to drink water consistently rather than in large amounts all at once, and increase fiber gradually over a week or two to avoid bloating and gas.