Why Is My Husband Passing Gas So Often and Smelly? - Gastroenterology and Hepatology

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Why is my gas so frequent and foul-smelling? Please help me!


Dear Doctor: My husband passes gas quite frequently, averaging about every 20 minutes, and sometimes even more often.
It's very foul-smelling, and I can't stand it! We often argue about this because it's really unpleasant, yet I have to tolerate it.
Could this indicate a gastrointestinal issue? What could be the cause? Should he see a doctor? Thank you for your response! I really appreciate it! Yen

yen, 20~29 year old female. Ask Date: 2001/10/13

Dr. Yang Guojun reply Gastroenterology and Hepatology


The production of intestinal gas primarily has three sources: first, gas that is swallowed; second, gas produced from the fermentation of substances in the intestines; and third, gas that diffuses from the bloodstream into the intestinal lumen.
A normal person produces approximately 1380 cc of gas daily and passes gas about 13 times a day.
The main components of this gas consist of 82% CO2, H2, and methane, while the foul-smelling components are primarily sulfur-containing compounds.
If you have an unhealthy intestinal environment, it is advisable to regularly consume probiotics such as Lactobacillus (including Lactococcus, Lactobacillus, and Streptococcus thermophilus) and Bifidobacterium (through fermented products like yogurt) to help purify the internal ecological environment.
If you experience frequent gas, it is recommended to reduce the intake of fermentable foods such as milk, lactose-containing products, starches, bread, steamed buns, and legumes.

Reply Date: 2001/10/13

More Info


Dear Yen,
I understand your frustration regarding your husband's frequent and foul-smelling gas. This condition, known medically as flatulence, can be quite common and is often a result of various dietary and gastrointestinal factors. Let's explore some potential causes and considerations that may help you and your husband address this issue.

1. Dietary Factors: One of the most common reasons for excessive gas is the consumption of certain foods. Foods that are high in fiber, such as beans, lentils, broccoli, onions, and whole grains, can lead to increased gas production as they are fermented by bacteria in the intestines. Additionally, carbonated beverages can introduce extra air into the digestive system, contributing to gas. If your husband has recently changed his diet or is consuming more of these gas-producing foods, this could be a significant factor.

2. Food Intolerances: Lactose intolerance is a prevalent condition where individuals have difficulty digesting lactose, a sugar found in milk and dairy products. Similarly, some people may have difficulty digesting gluten or other components in certain foods. If your husband experiences gas after consuming specific foods, it may be worth considering an elimination diet to identify any intolerances.

3. Gut Health: The balance of bacteria in the gut plays a crucial role in digestion. An imbalance, known as dysbiosis, can lead to excessive gas production. Probiotics, which are beneficial bacteria, can help restore this balance and may reduce gas and bloating. If your husband has recently taken antibiotics or has had gastrointestinal issues, this could be a contributing factor.

4. Swallowing Air: Some individuals may swallow air while eating or drinking, especially if they eat quickly or talk while eating. This can lead to increased gas in the digestive tract. Encouraging your husband to eat slowly and chew his food thoroughly may help reduce the amount of air swallowed.

5. Underlying Medical Conditions: While many cases of excessive gas are benign, certain gastrointestinal conditions can lead to increased flatulence. Conditions such as irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), or gastrointestinal infections can cause changes in bowel habits and gas production. If your husband's symptoms are persistent or accompanied by other symptoms such as abdominal pain, diarrhea, or weight loss, it would be advisable to consult a healthcare professional for further evaluation.

6. Lifestyle Changes: Encouraging your husband to maintain a food diary can help identify patterns and triggers related to his gas production. Additionally, regular exercise can promote healthy digestion and reduce gas buildup.

In conclusion, while excessive and smelly gas can be bothersome, it is often manageable through dietary adjustments and lifestyle changes. If your husband's symptoms persist or worsen, or if he experiences additional gastrointestinal symptoms, it would be prudent to seek medical advice. A healthcare provider can perform a thorough evaluation, including a review of his medical history and possibly some tests, to rule out any underlying conditions.

I hope this information helps you understand the potential causes of your husband's symptoms and provides a pathway to finding relief for both of you. Thank you for reaching out, and I wish you both the best in addressing this issue.

Best regards.

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