Dietary Fiber, Atherosclerosis, and Cardiovascular Disease.
Level 5 - mechanism / opinion, no new human data
Narrative review summarizing mechanisms and general literature without systematic search methodology.
PubMed 31126110 · doi:10.3390/nu11051155
What was done
This narrative review summarizes current knowledge regarding dietary fiber types (water-soluble and water-insoluble fibers, as well as functional fibers), food sources, physiological mechanisms, recommended dietary allowances, and their relationship with atherosclerosis and cardiovascular disease risk reduction.
What was found
The abstract reports recommended daily allowances (RDAs) for total fiber intake of 38 g/day for men and 25 g/day for women aged 19–50 years, while noting these guidelines target healthy individuals and that most Americans fail to meet them. It describes that soluble fibers lower blood cholesterol and insoluble fibers accelerate gastric emptying and increase fecal bulk. The abstract provides no specific quantitative risk reduction figures or effect sizes for cardiovascular endpoints.
Why it matters
It consolidates nutritional classifications, physiological mechanisms, and intake recommendations relevant to dietary fiber's role in cardiovascular health.
Limits
The abstract describes a non-systematic narrative review with no defined search protocol, study selection criteria, quality appraisal, or quantitative data synthesis. Specific sample sizes and effect estimates for clinical outcomes are not reported in the abstract.
Cited by
- supports The daily recommended intake for dietary fiber is 38 grams for men and 25 grams for women.