Flatulence increases with age, and it’s one of the most common digestive complaints among older adults. The average person passes gas 14 to 23 times a day, but aging slows your entire digestive process, giving gut bacteria more time to ferment food and produce gas. The good news: most of the causes are manageable with changes to how you eat, what you eat, and how you move.
Why Gas Gets Worse as You Age
Your digestive system slows down as you get older. The muscles that push food through your intestines become more lax, and the whole journey from eating to elimination takes longer than it used to. When food sits longer in your stomach and colon, bacteria have more time to break it down and release gas. This slower transit is also why constipation becomes more common with age, and backed-up stool only compounds the bloating and gassiness.
Your body also produces less stomach acid over time. That means foods you’ve eaten comfortably for decades can gradually become harder to digest. Dairy is a classic example: many people develop some degree of lactose intolerance in their 60s and 70s as the enzyme that breaks down milk sugar declines. But it’s not just dairy. Whole grains, beans, cruciferous vegetables like broccoli and cabbage, and even certain fruits can become new sources of gas that never bothered you before.
Foods That Commonly Cause Problems
The biggest gas producers tend to be foods high in certain types of fiber and carbohydrates that your body can’t fully absorb. Instead, bacteria in your large intestine ferment them, releasing hydrogen and methane. Common culprits include:
- Beans and lentils, which contain sugars your small intestine lacks the enzyme to break down
- Cruciferous vegetables like broccoli, Brussels sprouts, cauliflower, and cabbage
- Whole grains, particularly wheat, oats, and bran cereals
- Dairy products, especially milk, soft cheeses, and ice cream
- Onions, garlic, and leeks
- Carbonated drinks, which add gas directly to your digestive tract
- Sugar-free products containing sorbitol or other sugar alcohols
This doesn’t mean you need to eliminate all of these. The practical approach is to keep a simple food diary for a week or two, noting what you ate and when gas was worst. Patterns usually emerge quickly. Once you identify your triggers, you can reduce portions of those foods rather than cutting them out entirely. Cooking vegetables thoroughly also breaks down some of the fibers that cause trouble, making them easier on your system than raw versions.
How You Eat Matters Too
A surprising amount of intestinal gas comes not from food fermentation but from swallowed air. Eating quickly, talking while chewing, drinking through straws, and chewing gum all force extra air into your digestive tract. For older adults, poorly fitting dentures are a particularly common and overlooked cause. When dentures don’t fit well, chewing becomes less efficient, producing a coarser, poorly broken-down bite of food. You compensate by swallowing larger pieces, and you swallow more air in the process.
Slowing down at meals helps on two fronts. Chewing more thoroughly means food arrives in your stomach in smaller pieces that are easier to digest. And eating at a relaxed pace reduces the volume of air you swallow. Smaller, more frequent meals also keep your sluggish digestive system from getting overwhelmed. Three large meals give bacteria a feast to ferment. Five or six smaller portions spread across the day keep things moving more steadily.
Movement That Helps Your Gut
Physical activity is one of the most effective ways to reduce gas and bloating because it directly speeds up how quickly food moves through your intestines. Walking is the simplest option. A 15 to 20 minute walk after a meal enhances intestinal motility, improves circulation to your digestive organs, and helps regulate bowel movements. It’s accessible, low-risk, and something you can do daily.
Yoga is particularly useful for gas because it combines gentle twisting postures with controlled breathing. Twists increase blood flow to the intestines and help move trapped gas along. Research shows yoga reduces bloating, cramping, and general digestive discomfort by easing tension in the muscles lining your gut. Tai chi offers similar benefits through slow, controlled movements that support the connection between your brain and digestive system, reducing stress-related digestive symptoms and promoting regularity.
Swimming and aquatic exercise are also good choices if joint pain or balance concerns make land-based activity difficult. The key is consistency rather than intensity. Moderate, regular movement helps far more than occasional vigorous exercise, which can actually worsen digestive symptoms in some older adults.
Probiotics and Digestive Supplements
Probiotics can help by improving how efficiently your gut processes food. A study of 231 elderly patients with digestive disorders found that supplementing with the probiotic strain Lactobacillus rhamnosus GG significantly improved gastric motility and nutrient absorption. Faster motility means less time for bacteria to ferment food in your colon, which means less gas. Participants took the probiotic twice daily for at least seven days before seeing benefits.
You can find this strain in supplement form at most pharmacies. Fermented foods like yogurt, kefir, sauerkraut, and kimchi also deliver beneficial bacteria, though in less standardized amounts. If dairy triggers your gas, look for dairy-free fermented options or stick with capsule-form probiotics.
Over-the-counter digestive enzyme supplements can also help with specific triggers. Lactase supplements taken just before eating dairy provide the enzyme your body no longer makes enough of. Products containing alpha-galactosidase help break down the complex sugars in beans and vegetables before they reach the bacteria in your colon. These work best when taken with the first bite of the problem food, not after symptoms start.
Medications That May Be Contributing
If your flatulence increased around the same time you started a new prescription, the medication could be a factor. Several drugs commonly prescribed to older adults list gas and bloating as side effects. Diabetes medications that slow sugar absorption are well-known offenders. Some blood pressure medications, cholesterol-lowering drugs, iron supplements, and certain pain relievers can also disrupt digestion and increase gas production. If you suspect a medication, talk to your prescriber about alternatives or timing adjustments rather than stopping anything on your own.
When Increased Gas Signals Something Else
Passing gas more than 23 times a day, or noticing a significant change in your usual pattern, can sometimes point to an underlying condition. Small intestinal bacterial overgrowth (SIBO), where bacteria colonize parts of the gut where they don’t belong, is more common in older adults and causes excessive gas, bloating, and diarrhea. Celiac disease can also develop later in life, even if you’ve eaten gluten without trouble for decades.
Pay attention to gas that comes with unintentional weight loss, persistent changes in stool consistency, blood in your stool, or abdominal pain that doesn’t resolve. These combinations warrant a conversation with your doctor, as they can indicate conditions ranging from food intolerances to more serious digestive diseases that are treatable when caught early.