How Much Do People Really Fart? New Research Reveals the Truth

Flatulence, often a taboo subject, is a normal biological process. But how much gas is too much? A recent study from the University of Maryland sheds light on the surprisingly wide range of normal flatulence, and the role diet plays in gas production.

Smart Underwear Tracks Gas Production

Researchers at the University of Maryland (UMD) have developed “Smart Underwear,” a wearable device designed to measure human flatulence. The device, equipped with electrochemical sensors, discreetly snaps onto underwear and tracks intestinal gas production around the clock. The study, published in Biosensors and Bioelectronics: X, aims to revisit long-standing assumptions about how often people fart and gain insights into gut microbial metabolism.

Average Flatulence: More Than You Think

The study found that healthy adults produce flatus an average of 32 times per day, significantly higher than the commonly cited figure of 14 (±6) events found in older medical literature. Researchers observed substantial individual variation, ranging from as few as four to as many as 59 daily flatulence events.

Previous estimates were likely lower due to reliance on invasive techniques, small study sizes, or self-reporting, which is prone to inaccuracies and the inability to track gas production during sleep.

Diet’s Impact on Gas Production

A follow-up study involving 38 volunteers investigated the impact of diet on gas production. Participants first followed a low-fiber diet, then consumed either confectionery or gum containing inulin, a fermentable fiber. Researchers observed an increase in hydrogen production in 36 of the 38 participants within 3-4 hours of consuming inulin, coinciding with the time required for fermentation in the colon.

Certain foods are known to promote fermentation and gas production, including:

• Beans
• Cabbage
• Broccoli
• Legumes
• Cherries
• Apples
• Pears

Chewing gum and carbonated beverages can also contribute to flatulence.

Managing Flatulence: Hydration and Exercise

To help minimize excessive flatulence, researchers recommend staying well-hydrated – drinking between 1.5 and 2 liters of water per day – and engaging in regular physical activity.

Is Your Gas Normal?

Brantley Hall, the study author, emphasizes the necessitate for a baseline understanding of normal gas production. “We don’t really understand what normal gas production looks like,” Hall stated in a press release. “Without a reference point, it’s difficult to know when a person’s gas production is truly excessive.”

Dr. Vincent Valinducq recommends letting gas pass, but advises consulting a doctor if you experience pain, discomfort, or have any concerns. TF1 Info

Abdominal Bloating is Common

Abdominal bloating is also a frequently reported gastrointestinal symptom. A survey of nearly 89,000 Americans found that 13.9% reported bloating in the past 7 days. The study, published in PubMed, indicated that women and individuals with comorbidities like irritable bowel syndrome were more likely to experience bloating.

Most adults (89%) experience gas-related symptoms daily, impacting their quality of life, according to a study published in Gastroenterology Advisor in June 2025.