What is PFAS?
PFAS (per- and polyfluoroalkyl substances) are a group of chemicals commonly used in thousands of consumer products such as non-stick cookers, food packaging, waterproof clothes and dirtproof mates. Due to their durable nature, PFAS is not easily broken down in the environment and can live in the human body for many years. Many studies have linked PFAS with serious problems such as cancer, reproductive disorders, liver disease and hypercholesterolemia.
A newly published study has brought remarkable results: eating a lot of fiber can help reduce PFAS levels in the body. Specifically, scientists analyzed blood samples of 72 men with high cholesterol who participated in an experiment on fiber-rich oatmeal drinks. After four weeks of using this drink, participants with long-chain PFAS in their blood had significantly lower levels than those who consumed lower-fiber drinks.
Why can fiber help remove PFAS?
When fiber enters the body, it will not be digested like other nutrients. Instead, it acts as a sea sponge in the intestines, forming a gel that helps catch some toxic substances.
Just like fiber can bind to cholesterol and prevent it from being absorbed into the blood, it also has the ability to bind to PFAS molecules, preventing them from passing through the intestines into the liver and blood, says Dr. Kelly Johnson-Arbor, a toxicologist at MedStar Georgetown University Hospital (USA).
In other words, fiber can help the body "eliminate" PFAS before they penetrate the blood circulatory system.
How common is PFAS?
According to statistics, more than 98% of Americans have traces of PFAS in their blood. These substances were widely used in consumer products before being restricted or banned in some countries. However, due to their sustainable properties, PFAS still exists in the environment and food chain.
To increase fiber in your diet, you can eat lots of green vegetables (such as Brussels sprouts, broccoli), fruits, beans, nuts and whole grains. Increase your fiber intake slowly to adapt to your body, and don't forget to drink enough water to avoid feeling full.
In addition, you can also reduce your risk of PFAS exposure by:
Use water purifiers that are certified to remove PFAS.
Limit the use of non-stick baked goods.
Avoid buying products with "anti-venom" or "anti-olation" labels.
