While many types of bacteria in the gut contribute to gas production, the two major phyla primarily responsible are Bacteroidetes and Firmicutes.
These two groups of bacteria comprise over 90% of the total bacterial population in the human gut and play a significant role in the fermentation of undigested carbohydrates, which is a key process leading to gas formation.
Here's a more detailed look:
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Bacteroidetes: This phylum is known for its ability to ferment a wide range of complex carbohydrates that the human body cannot digest on its own. The fermentation process releases gases like hydrogen, carbon dioxide, and sometimes methane.
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Firmicutes: This phylum is a very diverse group, and certain species within it are significant gas producers. Some Firmicutes can also utilize hydrogen produced by other bacteria, converting it to other gases like methane or hydrogen sulfide (which can contribute to the odor of gas).
It's important to note that the specific types of bacteria and the amount of gas produced can vary greatly from person to person, depending on diet, gut microbiome composition, and other individual factors. Different species within these phyla have varying capabilities for gas production.
