Why Do Baked Beans Make You Fart?

Why baked beans cause more gas than other beans

Baked beans still contain the same oligosaccharides found in other beans, but they often come with extra ingredients that increase fermentation.

These commonly include:

• Added sugars
• Tomato based sauces
• Sweeteners such as molasses or syrup

When these ingredients reach the large intestine, gut bacteria ferment them alongside the bean carbohydrates, which can lead to more gas.

Is it the beans or the sauce

In many cases, it is both. The beans themselves contain fermentable carbohydrates, while the sauce adds extra fuel for gut bacteria.

This is why plain cooked beans are often better tolerated than baked beans in rich or sweet sauces, especially if you are sensitive to bloating. For a deeper explanation of why beans cause gas in general, see our guide on why beans make you fart.

Are tinned baked beans harder to digest

Tinned baked beans are not inherently bad for digestion, but portion size matters. Because they are easy to eat in large amounts, it is easy to overload the gut with fermentable carbohydrates in one sitting.

Some people also find that the texture and processing of canned beans affects how quickly they are fermented in the gut.

How to reduce gas from baked beans

If baked beans tend to cause discomfort, small changes can help:

• Choose versions with no added sugar or lower salt
• Stick to smaller portions
• Pair baked beans with other foods such as rice or vegetables
• Eat them slowly rather than in large servings

You do not need to avoid baked beans completely to support gut health.

Should you avoid baked beans

No. Baked beans can still be part of a healthy, fibre rich diet. If they cause noticeable gas, adjusting portion size or choosing simpler versions can make them easier to tolerate.