In the morning your pants fit fine; by evening they’re tight like after a holiday dinner – your belly feels pumped up, gurgles and presses. Bloating is one of the most common digestive complaints there is, and the cause is almost always harmless: air and gas that form during digestion or get swallowed. Still, it can really get in the way of daily life. Here you’ll learn the most common causes, what helps right away – and when it’s worth getting checked.
Key takeaways
- Bloating comes from extra gas forming in the gut or from swallowed air – usually harmless, but annoying.
- Most common triggers: eating too fast, gas-producing and highly processed foods, sugar substitutes – and intolerances such as lactose or fructose intolerance.
- Typically harmless: your belly is flat in the morning and swells up over the course of the day.
- A food and symptom diary is the best tool for finding your personal triggers.
- Get bloating checked if there are red flags, or if it’s new, persistent and getting worse.
The most common causes
- Eating habits: eating fast, talking while you eat, carbonated drinks and chewing gum all let air into your digestive tract.
- Gas-producing foods: beans and lentils, cabbage, onions, fresh bread – healthy, but gassy. Your gut bacteria ferment the undigested parts and produce gas in the process.
- Sugar substitutes: sorbitol, xylitol and the like in “sugar-free” products and chewing gum are underrated bloating drivers.
- Food intolerances: with lactose or fructose intolerance, undigested sugars reach the large intestine and are fermented there – typical signs are gas and diarrhea after dairy products or after fruit and juices.
- Irritable bowel syndrome (IBS): here an oversensitive gut adds to the problem – even normal amounts of gas feel uncomfortably tight.
- Hormones and lack of exercise: your menstrual cycle and long hours of sitting also affect how sluggish your gut is and how bloated your belly feels.
A reassuring pattern: Bloating that’s gone in the morning and only builds up during the day strongly points to a harmless, digestion-related cause. A belly that stays swollen all the time and keeps getting bigger, on the other hand, should be looked at by a doctor.
The following signs don’t fit harmless bloating and should be checked soon:
- A growing waistline that no longer goes down by morning
- Unintended weight loss, fever or night sweats
- Blood in your stool or black stool
- Severe pain, vomiting, or no bowel movements and no passing of gas
Please don’t wait:
See a doctor soon
