Real-Time Fart Tracking? It’s Actually Happening!

Close-up of hands typing on a laptop with data visualizations on the screen

Scientists discovered humans fart twice as often as anyone thought, thanks to underwear that tracks every toot in real time.

Story Snapshot

Healthy young adults average 32 farts daily, double the old estimate of 14, with ranges from 4 to 59.
A quarter-sized sensor snaps onto regular underwear for 24/7 non-invasive tracking, missing only sleep and biking.
University of Maryland team launched Human Flatus Atlas; 800 sensors sold out instantly, 3,500 on waitlist.
Device born from lab frustration when a pants-stuck sensor detected strong hydrogen signals from gut microbes.
Crowdsourced data will map normal flatus patterns, linking diet, microbiome, and gas output.

Serendipitous Invention in the Lab

Microbiologist Brantley Hall’s team at University of Maryland struggled to measure gut microbe hydrogen in oxygen-free chambers. They stuck the sensor in pants during an informal test. It picked up a massive signal from natural flatulence. This breakthrough inspired a wearable device. Hall, an assistant professor in Cell Biology and Molecular Genetics, refined the quarter-sized hydrogen sensor. It snaps onto any underwear waistband for continuous monitoring.

Pilot Study Reveals Shocking Frequency

Santiago Botasini led the December 2025 pilot study published in Biosensors and Bioelectronics: X. Healthy college-age volunteers wore the sensor for days. They averaged 32 farts per day, ranging 4 to 59. This doubled prior self-reported estimates of 14. The device captured nocturnal events missed by diaries. It showed 94.7% sensitivity for fiber-induced gas spikes in 36 of 38 participants. Old methods like rectal tubes failed daily life tracking.

Human Flatus Atlas Crowdsources Baselines

February 2026 saw the Human Flatus Atlas launch at flatus.info. Hall recruited U.S. adults 18+ as “Zen Digesters” for low gas on high fiber, “Hydrogen Hyperproducers” for high output, and average folks. Participants wear sensors 3 to 30 days, log diets via photos, and share microbiome data. Initial 800 units sold out in days. Enrollment paused with 3,500 on waitlist. Remote shipping enables nationwide participation.

The Atlas fills gaps in gut health baselines, like glucose monitors do for blood sugar. Doctors lack objective flatulence data for bloating patients. Gut microbes produce hydrogen as a byproduct. Variations tie to diet and microbiomes. This wearable correlates them precisely, unlike 2000 reviews by Michael Levitt decrying impossible objective tests.

How often do people really fart? Scientists built smart underwear to find out

Researchers have created “Smart Underwear,” a wearable device that measures flatulence by detecting hydrogen produced by gut microbes. Early tests suggest people may pass gas about 32 times a day—much…

— The Something Guy 🇿🇦 (@thesomethingguy) March 14, 2026

Commercial Push via Ventoscity Startup

Hall and Botasini founded Ventoscity LLC. University of Maryland funded development through Maryland Innovation Initiative and UM Ventures. Patents filed protect the IP. The startup targets fiber supplement firms testing flatulence side effects in prebiotics. Device endures rugby and 5K runs but shifts during biking. Hall expressed shock at data voids, like unknown night farts. Public demand surprised him: “People want to talk too much about it.”

Impacts on Health, Industry, and Stigma

Short-term, baselines aid diagnosing excessive gas. Long-term, the Atlas maps U.S. norms, informs nutrition science. Patients gain tools; supplement companies get precise testing. Wearables advance beyond glucose monitors into gut health. Socially, massive interest normalizes taboo talks. Economic wins flow to UMD and startup from commercialization. Gastroenterology revisits flawed assumptions.