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The development of methane production in childhood and adolescence
Insights
Methane production in breath is absent in children under 3. Breath methane levels increase with age, reaching adult levels by age 18, suggesting age-related physiological changes.
Area of Science:
- Gastroenterology
- Microbiology
- Pediatric Medicine
Background:
- Methane (CH4) is a gas produced by certain gut bacteria.
- Methane production varies significantly among individuals and can be influenced by age.
- Understanding age-related changes in methane production is crucial for diagnosing gut dysbiosis.
Purpose of the Study:
- To investigate the prevalence of methane production in expired air across different age groups, from infants to adolescents.
- To identify age-specific patterns in methane production.
- To explore potential reasons for observed age-related variations in methane production.
Main Methods:
- Breath samples were collected from 393 participants, including infants, children, and adolescents.
- Methane concentration in expired air was analyzed using gas chromatography.
- Participants were categorized into distinct age groups for comparative analysis.
Main Results:
- No methane production was detected in individuals younger than 3 years.
- Methane production was observed in 6.4% of children aged 3-4 years, increasing to 14.3-18.2% in those aged 7-14 years.
- A significant rise in methane production to 39.4-45.9% was noted in adolescents aged 14-18 years, approaching adult levels (49.4%).
Conclusions:
- Methane production in expired air shows a clear age-dependent pattern, increasing significantly during adolescence.
- The underlying reasons for these changes are unknown but may involve alterations in colonic flora or substrate availability.
- Further research into specific substrate production is warranted to explain age-related methane variations.
Abstract:
Methane concentration in the expired air was analyzed in 393 infants, children, and adolescents. There was no methane production below the age of 3 years. In the age group 3-4 years, 6.4% of the children produced methane. The percentages were 14.3-18.2% in children aged 7-14. A rise in methane production to 39.4-45.9% was recorded from age 14 to 18, as compared with 49.4% in adults in Israel. The reasons for these changes in methane production with age are not known. Alterations in the colonic flora or the production of a specific substrate(s) are the main possibilities. In our opinion, the latter possibility deserves further investigation.