1 00:00:01,920 --> 00:00:06,400 Speaker 1: Welcome to brain Stuff production of I Heart Radio. Hi 2 00:00:06,519 --> 00:00:09,400 Speaker 1: brain Stuff Lauren vogel Bomb here with a classic episode 3 00:00:09,440 --> 00:00:12,920 Speaker 1: from our archives. In this one, we go into the 4 00:00:13,119 --> 00:00:20,800 Speaker 1: perhaps impolite but fascinating world of farts. Hey, they're brain stuff, 5 00:00:20,840 --> 00:00:24,160 Speaker 1: Lauren vogel Bomb here. It's as Bart Simpson once said, 6 00:00:24,480 --> 00:00:27,120 Speaker 1: beans beans the musical fruit. The more you eat, the 7 00:00:27,160 --> 00:00:30,680 Speaker 1: more you toot. Beans have a reputation as a musical fruit, 8 00:00:31,000 --> 00:00:33,880 Speaker 1: but for all their noisiness, they don't usually make farts 9 00:00:33,960 --> 00:00:37,920 Speaker 1: smell worse. The same is true for most flatulens causing foods, 10 00:00:37,960 --> 00:00:40,840 Speaker 1: such as asparagus or chickpeas. They may make you fart 11 00:00:40,880 --> 00:00:44,880 Speaker 1: more often, but they don't make your farts particularly stinky. Sure, 12 00:00:44,960 --> 00:00:48,839 Speaker 1: a vegetarians diet based on nuts, fruit, vegetables, and lagoons 13 00:00:49,120 --> 00:00:51,720 Speaker 1: is rich in fiber, but fiber alone is not to 14 00:00:51,760 --> 00:00:54,760 Speaker 1: blame for the increased gas production that comes with plant 15 00:00:54,840 --> 00:00:57,800 Speaker 1: based eating habits. The culprit is actually a type of 16 00:00:57,800 --> 00:01:02,160 Speaker 1: sugar molecule called oligo saccharai. Oligo saccharides are too large 17 00:01:02,200 --> 00:01:04,600 Speaker 1: to be easily absorbed through the wall of the small intestine, 18 00:01:04,800 --> 00:01:08,280 Speaker 1: so they move through the large intestines unfettered until they 19 00:01:08,319 --> 00:01:10,880 Speaker 1: meet some of the seventy plus kinds of bacteria that 20 00:01:10,920 --> 00:01:14,800 Speaker 1: live there. As these bacteria feast on the all ego saccharides, 21 00:01:15,000 --> 00:01:19,319 Speaker 1: they create an abundance of gassy byproducts. Colloquially speaking, the 22 00:01:19,360 --> 00:01:23,520 Speaker 1: bacteria fart and you fart out their farts. While the 23 00:01:23,560 --> 00:01:26,320 Speaker 1: jury is still out on whether vegetarians fart more often 24 00:01:26,319 --> 00:01:30,240 Speaker 1: than omnivores, there is evidence that vegetarian farts maybe among 25 00:01:30,280 --> 00:01:33,560 Speaker 1: the least noxious, or not as noxious as a meat 26 00:01:33,560 --> 00:01:36,679 Speaker 1: eater s farts. Anyway, the credit for smelly farts goes 27 00:01:36,720 --> 00:01:39,040 Speaker 1: in part to meat that is consumed as part of 28 00:01:39,040 --> 00:01:42,440 Speaker 1: an omnivorous diet. For the most part, meat contains high 29 00:01:42,560 --> 00:01:45,920 Speaker 1: levels of sulfur and sulfur Latin foods produce more odors 30 00:01:45,959 --> 00:01:49,440 Speaker 1: as they're digested. When bacteria in the digestive system break 31 00:01:49,480 --> 00:01:52,920 Speaker 1: down foods, it produces all kinds of byproducts when they 32 00:01:52,920 --> 00:01:56,440 Speaker 1: break down foods rich in sulfur. The byproducts include sulfides 33 00:01:56,480 --> 00:02:00,559 Speaker 1: and mercpton's, the gases that lend their unmistakable smell to farts. 34 00:02:01,000 --> 00:02:04,200 Speaker 1: Hydrogen sulfide in particular causes past gas to have an 35 00:02:04,200 --> 00:02:09,040 Speaker 1: odor reminiscent of rotten eggs. The other gases produced during digestion, nitrogen, 36 00:02:09,080 --> 00:02:13,880 Speaker 1: carbon dioxide, oxygen, and methane are virtually odorless. By contrast, 37 00:02:14,040 --> 00:02:18,400 Speaker 1: most vegetables produce fewer smelly byproducts during digestion. But don't 38 00:02:18,440 --> 00:02:20,680 Speaker 1: think that if you don't eat meat you'll never have 39 00:02:20,760 --> 00:02:23,720 Speaker 1: smelly farts. Any food that is high in sulfites, such 40 00:02:23,720 --> 00:02:27,440 Speaker 1: as cabbage, broccoli, onions, brussels sprouts, peas, leaks, and garlic, 41 00:02:27,760 --> 00:02:31,880 Speaker 1: will result in sulfide and mercantin rich gas production. So 42 00:02:32,320 --> 00:02:35,080 Speaker 1: even though omnivores and vegetarians may not have much in 43 00:02:35,120 --> 00:02:37,240 Speaker 1: common when it comes to selecting a main dish off 44 00:02:37,280 --> 00:02:39,799 Speaker 1: the menu, they can raise their forks and unity at 45 00:02:39,800 --> 00:02:42,919 Speaker 1: the wonders of gut bacteria. Regardless of what we eat, 46 00:02:43,280 --> 00:02:46,320 Speaker 1: we all fart, and sometimes it's smellier because of what 47 00:02:46,360 --> 00:02:54,079 Speaker 1: we've eaten. Today's episode was written by Laurie L. Dove 48 00:02:54,120 --> 00:02:57,320 Speaker 1: and produced by Tristo McNeil and Tyler Clang. For more 49 00:02:57,360 --> 00:03:00,359 Speaker 1: on this and lots of other completely dignified topics, visit 50 00:03:00,400 --> 00:03:03,040 Speaker 1: how stuff works dot com. Brain Stuff is a production 51 00:03:03,040 --> 00:03:05,480 Speaker 1: of my Heart Radio. For more podcasts from my Heart Radio, 52 00:03:05,639 --> 00:03:08,480 Speaker 1: visit their heart Radio app, Apple Podcasts, or wherever you 53 00:03:08,520 --> 00:03:09,760 Speaker 1: listen to your favorite shows,