Overusing Fats and Oils

Cooking with too much fat is a sneaky culprit behind many IBS flare-ups. When you pour extra oil into the pan or reach for the butter without thinking, it can spell trouble for sensitive stomachs. Recent research from the Journal of Gastroenterology in 2024 revealed that about 60% of people with IBS experienced a spike in symptoms after eating high-fat meals, especially those heavy on saturated fats. Fats tend to slow down digestion, making people feel bloated, gassy, and uncomfortable. Experts like Dr. Maya Linton, a leading gastroenterologist, advise using healthier fats like olive oil, and even then, only in small amounts. Swapping out frying for baking, steaming, or grilling can help keep those sneaky fats in check. It’s surprising how much of a difference just a tablespoon less oil can make in your daily comfort.
Ignoring Portion Sizes

Many people don’t realize that how much you eat is just as important as what you eat when it comes to IBS. Eating big portions can overwhelm the digestive system, often leading to symptoms like cramps and urgent bathroom trips. In a 2025 IBS Association survey, an eye-opening 75% of respondents said large meals were a direct trigger for their symptoms. Instead of piling food high, experts recommend eating smaller, more frequent meals throughout the day. This approach can ease the workload on your gut and help prevent those dreaded post-meal flare-ups. It also makes it easier to include a mix of food groups, which is important for overall nutrition. Paying attention to plate size and portion amounts can be a simple, almost painless way to reduce the risk of IBS symptoms sneaking up on you.
Relying on Processed Foods

Processed foods may be convenient, but they often contain additives, preservatives, and artificial ingredients that can spell disaster for people with IBS. According to a 2024 report from the Food and Nutrition Journal, many folks with IBS noticed their symptoms flared up after consuming packaged snacks, frozen dinners, or fast food. These foods are tough on digestion and often hide high amounts of unhealthy fats and sugars. Experts say that cooking from scratch, even if it’s just a few times a week, can drastically reduce the intake of IBS-triggering ingredients. Swapping out processed foods for fresh fruits, vegetables, and whole grains not only calms the digestive system but also boosts overall health. It’s not about being perfect, but about making more fresh choices over time.
Skipping Breakfast

It’s easy to rush out the door in the morning without eating, but skipping breakfast can throw the digestive system into chaos for people with IBS. Research consistently shows that those who eat breakfast tend to have fewer IBS symptoms. A 2025 study in the American Journal of Clinical Nutrition reported a notable 30% reduction in IBS flare-ups among regular breakfast eaters compared to those who skipped it. Breakfast helps set the tone for your gut, providing much-needed energy and promoting regular digestive rhythms. A meal that includes both fiber and protein—think oatmeal with nuts or eggs with veggies—can help stabilize blood sugar and keep things moving smoothly. Taking even just ten minutes in the morning for a balanced breakfast can make the rest of the day much more comfortable for your gut.
Cooking with High-FODMAP Ingredients

Certain foods hide a group of troublesome carbohydrates known as FODMAPs, which can be a nightmare for people with IBS. Ingredients like garlic, onions, apples, and wheat-based products can ferment in the gut, leading to bloating, gas, and pain. In 2024, a clinical trial in Gastroenterology found that a low-FODMAP diet helped 70% of IBS patients reduce their symptoms. Learning to spot these ingredients and swap them for low-FODMAP options—like green onions instead of regular onions, or using herbs like basil for flavor—can make a noticeable difference. Dr. Neil Foster, a GI specialist, emphasizes the importance of reading labels and experimenting with substitutes to avoid accidental triggers. Cooking meals with fresh, simple ingredients is often the safest bet for reducing FODMAP overload.
Neglecting Hydration

Drinking enough water sounds simple, yet it’s a step many people accidentally skip, especially during meal prep. Not getting enough fluids can make constipation—a common IBS complaint—even worse. A 2025 study in the Journal of Nutrition found that IBS sufferers who increased their water intake saw a clear drop in symptoms. Sipping water throughout the day, not just at meals, helps digestion and keeps everything moving in the gut. Including water-rich foods like cucumbers, oranges, or watermelon can also sneak in extra hydration. Keeping a water bottle nearby while cooking is a helpful reminder to stay on track. Sometimes, small changes like drinking more water can have the biggest impact on how your gut feels.
Cooking at High Temperatures

The way you cook your food matters just as much as what’s on your plate. High-heat methods like frying or grilling can create chemical compounds—specifically advanced glycation end products (AGEs)—that are known to increase inflammation and worsen IBS symptoms. A 2024 study in the Journal of Clinical Gastroenterology discovered that IBS patients who regularly ate grilled or fried foods had much more severe symptoms than those who stuck with gentler cooking techniques. Slow cooking, steaming, or baking are easier on your gut and help preserve the nutritional value of food. Experts recommend paying attention to cooking temperatures and opting for lower-heat methods whenever possible. It’s a small adjustment that can lead to big relief.
Eating Too Quickly

Wolfing down meals in record time is a habit that can backfire for anyone, but it’s especially risky for people with IBS. Eating too fast means you’re likely swallowing air along with your food, which can lead to uncomfortable bloating and pain. The International Journal of Gastroenterology published a 2025 study showing that people who ate slowly and mindfully reported significantly fewer IBS symptoms. Taking time to chew thoroughly and savor each bite gives your digestive system a chance to keep up. Experts suggest putting down your fork between bites, avoiding screens while eating, and engaging in conversation to slow the pace. This mindful eating approach can transform mealtime from a cause of stress to a source of relief.
Not Experimenting with Cooking Techniques

Sticking to the same old cooking routines can actually limit your options for controlling IBS symptoms. Some people might handle cooked veggies better than raw, or find that poaching is less irritating than sautéing. A 2024 survey from the IBS Research Foundation found that 65% of those who tried out new cooking methods and recipes experienced better symptom management. Trying things like roasting, pressure cooking, or even air frying (at moderate temperatures) can help you discover what works best for your gut. This trial-and-error process isn’t just about science—it can bring some fun and creativity back to the kitchen, making meals a little less stressful and a lot more enjoyable.