Perplexity AI:

Research indicates that individuals on a **vegan diet** produce significantly more flatulence than those consuming an **omnivorous diet**. Specifically, vegan men can fart up to **seven times more** frequently, with each fart containing about **50% more gas** compared to those on a meat-based diet[1][3]. This increased gas production is largely due to the fermentation of plant fibers by gut bacteria, which leads to larger stools and more frequent bowel movements[2][3]. Thus, the quantity of methane in a vegan fart is generally higher than in an omnivorous fart.

Sources

[1] Vegan Men Fart Seven Times More Than Non-Vegans, Study Finds https://www.menshealth.com/uk/nutrition/a37590491/vegan-men-fart-seven-times-more-than-non-vegans-study-finds/

[2] It's official: plant-based diets make us gassier… so what's worse for the ... https://www.foodnavigator.com/Article/2021/09/10/It-s-official-plant-based-diets-make-us-gassier-so-what-s-worse-for-the-planet-cow-or-human-farts

[3] Men fart more when eating a plant-based diet due to good gut ... https://www.newscientist.com/article/2289171-men-fart-more-when-eating-a-plant-based-diet-due-to-good-gut-bacteria/

[4] Methane emissions from herbivores have always existed https://www.carnisostenibili.it/en/methane-emissions-from-herbivores-have-always-existed/

[5] Vegan Vs Vegetarian Vs Omnivorous Diets: Which One has The Lowest ... https://www.meatlesskingdom.com/2022/10/05/vegan-vs-vegetarian-vs-omnivorous-diets-which-one-has-the-lowest-environmental-impacts/

[6] Cow Farts Aren't The Only Food-Related Climate Culprit - PBS https://www.pbs.org/wnet/peril-and-promise/2019/08/cow-food-emissions-climate/

[7] Bullshit, methane and veganism - LinkedIn https://www.linkedin.com/pulse/bullshit-methane-veganism-peter-j-hurley