Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Vegetable fiber, also known as dietary fiber, has scientific validation for its use in supporting cardiovascular health and potentially reducing the risk of arteriosclerosis (the thickening and hardening of arterial walls). Numerous epidemiological and clinical studies have shown that higher intake of dietary fiber—especially soluble fiber found in vegetables, fruits, legumes, and some grains—is associated with lower levels of total and LDL cholesterol, which are key risk factors for arteriosclerosis and atherosclerosis. The mechanism is thought to involve fiber's ability to bind bile acids in the gut, reduce cholesterol absorption, and improve lipid profiles. Furthermore, fiber intake is linked to better glycemic control and reduced inflammation, both of which are relevant to vascular health. For instance, a meta-analysis published in The Lancet (2019) found that increased dietary fiber intake was associated with reduced incidence of coronary heart disease and cardiovascular mortality. The American Heart Association and other major health organizations recommend a diet high in fiber for cardiovascular disease prevention, including arteriosclerosis. While fiber is not a direct treatment for established arteriosclerosis, its role in prevention and risk reduction is well-supported by current scientific evidence. It is important to note, however, that the evidence is based on overall dietary patterns rather than "vegetable fiber (unspecified)" as a supplement or singular intervention.

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