Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Orange fiber, primarily derived from the byproducts of orange juice production, is rich in dietary fiber, particularly soluble fiber such as pectin. Several clinical and preclinical studies have investigated the effects of citrus fibers on lipid metabolism, including triglycerides. Soluble fiber is well-documented to reduce serum cholesterol levels, and some evidence extends this to triglycerides, though the effect is generally modest compared to cholesterol. Mechanistically, soluble fiber can delay gastric emptying, reduce absorption of dietary fats, and promote the excretion of bile acids, all of which may contribute to lower triglyceride levels.

Specifically, studies on orange fiber and related citrus fibers have shown that their intake can improve lipid profiles in both healthy individuals and those with hyperlipidemia. For example, a few small-scale human trials have observed reductions in serum triglyceride levels after supplementation with citrus pectin or orange fiber, though the magnitude of effect is variable and often more pronounced for total and LDL cholesterol. The beneficial effects are likely due to the high content of soluble fiber and bioactive compounds such as flavonoids present in orange fiber.

In summary, while there is moderate scientific validation for orange fiber’s potential to support lowered triglyceride levels, the evidence is not as robust as for cholesterol. The overall effect is likely to be supportive rather than primary, and orange fiber should be considered an adjunct to other lifestyle and dietary interventions for managing hypertriglyceridemia.

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