Most already know that fiber-rich foods like pulses—such as Montana grown lentils, chickpeas, and dry peas—support gut health, help lower cholesterol and reduce the risk of chronic disease. But emerging research is giving us another compelling reason to eat more of them: fiber may help reduce the absorption of microplastics into our bodies.
Why it Matters
According to Carrie Dennett’s article in the June 9, 2025 Seattle Times, many in the U.S. fall far short of the recommended 21–38 grams of fiber per day—with only 4% hitting that target. Scientists are increasingly finding microplastics in human blood, organs, even brains, where they may contribute to inflammation and impaired immunity . Dennett highlights that fiber helps “usher unwanted substances out of our intestines,” and new evidence suggests this includes microplastics.
Pulses Pack a Punch
Dennett notes that a half-cup of pulses delivers nearly 8 grams of fiber—over four times the fiber in the same portion of brown rice. The 2025 Dietary Guidelines Advisory Committee even recommends consuming up to three cups of pulses per week to boost fiber, protein and essential nutrients.
Supporting Science
A comprehensive review in Food Frontiers, “Fighting Microplastics: The Role of Dietary Fibers in Protecting Health,” explores how dietary fibers may help bind microplastics in the gut and enhance barrier integrity. Another independent source, Arnold’s Pump Club’s The Food That Protects You from Microplastics, reports that consuming at least 30 grams of fiber daily significantly decreased microplastic absorption into tissues and bloodstream.
What Science Says
Studies indicate fiber can bind microplastics, aid excretion, support intestinal lining health and reduce inflammation. These mechanisms help prevent microplastics from passing into the bloodstream.
Lifestyle Tips
• Add pulses into meals—like lentil soup, chickpea salad or bean tacos—as easy ways to increase fiber.
• Increase fiber intake slowly to allow your gut microbiome to adjust and reduce digestive upset.
• Pair diet with safer habits: avoid microwaving food in plastic containers, switch to glass or stainless-steel storage, and limit single-use plastics—all advised by Dennett’s article.
For Montana agriculture, promoting pulse crops means not only nutritional benefits but also public health protection and environmental stewardship. Montana-grown pulses are positioned to meet a rising demand driven by these new health insights.
Pulses have long been nutritional powerhouses—but now they may also serve as a natural defense against microplastics. Eating more pulses and reducing plastic exposure offers a simple, effective path toward improved health.
▶ Share this post to raise awareness. Try adding a new pulse-based recipe this week. And join the Montana Pulse Crop Committee conversation on how Montana’s pulse crops support both public health and sustainable rural economies.
