Bloating is one of the most frequent digestive symptoms, yet it remains poorly understood. It is often viewed as a simple issue of discomfort or appearance, but it is also a signal sent by the digestive system. According to Fanny Rengasamy, a precision nutrition coach, bloating corresponds to an accumulation of gas and sometimes liquid in the digestive tract, leading to distension of the abdominal wall.
The phenomenon of bloating can be caused by certain types of carbohydrates that are not fully digested in the small intestine. These carbohydrates, such as certain fibers, sugars, and starches, continue their journey to the colon, where they are fermented by intestinal bacteria. This fermentation produces gas, which can lead to a feeling of bloating, tension, and even pain.
Contrary to popular belief, bloating after a meal is not necessarily a direct result of what was just eaten. The phenomenon can be the result of several meals or snacks that have occurred in quick succession. Between meals, the small intestine naturally performs a sort of "cleaning" through a mechanism called the migrating motor complex. This mechanism corresponds to contractions that help move undigested food residues through the digestive tract.
Certain foods are more likely to cause bloating, particularly those rich in FODMAPs (Fermentable Oligo-, Di-, Mono-saccharides, and Polyols). These include onions, garlic, legumes, certain vegetables like cabbage, broccoli, and cauliflower, dairy products rich in lactose, certain fruits like apples and pears, and some sugar substitutes like sorbitol and xylitol.
Eating too quickly can also contribute to bloating. When eating rapidly, more air is swallowed, which can lead to belching, a feeling of fullness, and increased bloating. Additionally, rapid eating often leads to poor chewing, which can result in larger food particles entering the stomach and being less mixed with saliva.
To determine if a particular food is causing discomfort, Fanny Rengasamy recommends keeping a food and symptom journal. For two to three weeks, note what is eaten and drunk, at what time, and in what quantity, as well as how the body reacts. The context is also important, including stress levels, sleep quality, and, in women, menstrual cycle phase.
By identifying patterns and testing specific foods or food groups, it is possible to determine which foods are causing discomfort and adjust the diet accordingly. The goal is not to eliminate all potentially problematic foods but to avoid extremes, such as continuing to eat something that causes symptoms or unnecessarily eliminating many foods due to fear of bloating.
Key points
- Bloating is a common digestive symptom that can be caused by various factors, including food intake and eating habits.
- Certain foods, such as those rich in FODMAPs, can contribute to bloating.
- Keeping a food and symptom journal can help identify which foods are causing discomfort.
