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Natural fiber and bowel dysfunction

A M Connell

    The American Journal of Clinical Nutrition
    |December 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Natural fiber primarily increases stool bulk and may affect intestinal transit time. While research suggests benefits for conditions like irritable colon, conclusive evidence is still lacking, requiring further investigation.

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    Area of Science:

    • Gastroenterology
    • Human Physiology
    • Dietary Science

    Background:

    • Dietary fiber plays a crucial role in intestinal physiology.
    • Understanding the impact of natural fiber on bowel function is essential for digestive health.
    • Existing literature provides insights into fiber's effects, but comprehensive data is limited.

    Purpose of the Study:

    • To review the current scientific understanding of natural fiber's effects on intestinal physiology.
    • To evaluate the evidence supporting fiber's role in digestive health and disease management.
    • To identify gaps in knowledge regarding fiber's impact on bowel habits.

    Main Methods:

    • Literature review of existing studies on natural fiber and intestinal physiology.
    • Analysis of data concerning stool bulk, transit time, and colonic pressures.

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  • Assessment of clinical trial evidence for fiber's efficacy in gastrointestinal disorders.

    • Main Results:

    • Most natural fibers demonstrably increase stool bulk.
    • Fiber may alter intestinal transit time, potentially slowing rapid transit and speeding slow transit.
    • Limited data suggests bran may decrease colonic pressures, but evidence for irritable colon and diverticular disease is preliminary and inconclusive.

    Conclusions:

    • Natural fiber significantly impacts stool bulk and potentially transit time.
    • Current clinical evidence for fiber's therapeutic benefits in conditions like irritable colon and diverticular disease is insufficient.
    • Further rigorous research is necessary to validate the proposed health claims of natural fiber.