Pea fiber is a type of dietary fiber derived from yellow peas (Pisum sativum) and is primarily composed of insoluble fiber, though it also contains some soluble fiber. The use of pea fiber for supporting or treating high triglyceride levels is justified by scientific evidence, though the strength of this evidence is moderate and indirect.

Dietary fiber in general—especially soluble fiber—is well known to assist in the management of blood lipids, including triglycerides, by slowing digestion, reducing absorption of fat, and fostering beneficial changes in the gut microbiota. While most clinical research has focused on fibers like oat beta-glucan, psyllium, and pectin, some studies have specifically investigated pea fiber. For example, a few small human studies and animal models have shown that diets supplemented with pea fiber can modestly reduce serum triglyceride and cholesterol levels, possibly by binding bile acids and reducing fat absorption.

However, the total volume of human data on pea fiber is limited, and effects tend to be more pronounced with fibers higher in soluble content than the primarily insoluble pea fiber. As such, the use of pea fiber for high triglycerides is supported by a plausible mechanism and some early evidence, but it is not as robustly validated as other fiber types. For those seeking to manage triglycerides, incorporating a variety of dietary fibers, including pea fiber, may be beneficial, but expectations should be modest and it should not be considered a primary treatment.