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Gut health is having a moment—and for good reason. Science increasingly shows that our gut microbiome affects everything from digestion to immunity and even mental health. With this growing awareness comes important questions about how everyday products influence our gut, including household staples like dishwasher pods and rinse aids.
Recently, a study published in the Journal of Allergy and Clinical Immunology stirred interest in these products, potentially affecting gut health. But what do we really need to know? Don’t worry; I’m here to cut through the noise and provide a balanced, evidence-based perspective to help you make informed decisions.
Hi there, I’m Amanda – a California-based registered dietitian helping women to optimize their gut health. And while I focus more on food, the truth is there are a lot of things that can impact gut health, including the products that you use in your home to clean.
So, let’s get into it!
Breaking down the study
First, what’s all the fuss about?
The study in question looked at how certain chemicals in dishwasher detergents and rinse aids might affect the gut (1). It identified compounds such as surfactants and alcohol ethoxylates that could potentially weaken the gut barrier—the lining that keeps harmful substances out of our bloodstream. This could, in theory, contribute to gut-related issues like “leaky gut syndrome.”
But here’s the key detail many viral videos and articles leave out: the study used much higher concentrations of these chemicals than you, or I would encounter when using such products as intended at home.
According to the Michigan State University Institute for Integrative Toxicology Center for Research on Ingredient Safety (CRIS), some experiments involved dilution levels up to 300 times more concentrated than what household use exposes us to (2). On top of that, CRIS also highlights that the study used colorectal cancer cells as a model for intestinal cells, which isn’t an exact match for healthy gut tissue.
What does this mean for you?
It’s important to remember that these findings, while scientifically interesting, don’t translate directly to our everyday exposure.
Key takeaway: using dishwasher pods or rinse aids as directed is not a high-risk activity for your gut health.
Are dishwasher pods really a concern?
Let’s address a few specific concerns raised by the study and fear-driven conversations online.
1. Gut barrier damage
The concern here involves the potential weakening of the gut barrier, which could lead to an increased risk of conditions tied to “leaky gut.” However, commercial dishwashers are designed to rinse thoroughly, meaning only trace amounts of these chemicals ever remain on dishes. That’s a far cry from the highly concentrated levels studied.
2. Microbiome disruption
Some claim chemicals in rinse aids might disrupt the gut’s balance of bacteria. While this might be theoretically possible in extreme exposure cases, there’s no compelling evidence to suggest that trace amounts left on dishes significantly alter microbiome composition.
3. Cumulative impact
Could regular use over time lead to health issues? This is tough to measure, but so far, the evidence does not support the idea that long-term use of dishwasher pods within safety guidelines poses a significant health risk.
Misinformation debunked
A quick glance through viral posts about dishwasher detergents reveals exaggerated and often cherry-picked claims. Videos often blend a kernel of truth with sensationalist narratives to play on fears.
Before you hit “share,” consider the creator’s objectives and whether their sources align with expert, peer-reviewed evidence.
Gut health is multifactorial
Now that we’ve addressed the study let’s zoom out. Gut health is not determined by a single product or exposure but by a combination of factors, including diet, exercise, stress, and sleep. Here are some of the biggest players:
- Diet: A fiber-rich diet with plenty of fruits, vegetables, and whole grains nourishes the good bacteria in your gut (3).
- Exercise and Lifestyle: Regular physical activity and good hydration can help regulate digestion. Chronic stress, on the other hand, may harm your gut lining.
- Probiotics and Prebiotics: Foods like yogurt, kimchi, and garlic feed your microbiome, supporting its balance and diversity. Here is my article about probiotics and IBS if you’re curious: Probiotics for IBS.
- Reducing Stress: being stressed 24/7 has a major impact on gut health…and not in a good way! In fact, stress can make your digestive system suffer. Read this article for the full scoop: Stress-Induced IBS: The Gut-Brain Axis at Work.
Occasional, tiny chemical exposures from well-rinsed dishes are unlikely to override these larger influences on gut health.
How to protect your gut and stay safe
Feeling concerned? There’s no need to feel like the sky is falling. Here are some practical tips to strike a balance between safety and peace of mind:
1. Choose cleaner products
If you’d like to minimize your exposure, opt for eco-friendly or plant-based detergents without harsh surfactants. Look for third-party certifications like EPA Safer Choice or EWG Verified to ensure the product meets your ideal safety standards.
2. Focus on gut-friendly habits
Balance small exposures to household chemicals with gut-nourishing practices:
- Eat plenty of prebiotics and probiotics.
- Stay hydrated.
- Reduce stress through mindfulness or light exercise.
3. Handle products properly
Make sure you properly maintain your dishwasher so it’s working well. Don’t consume or directly contact concentrated products, which can be harmful. Keep pods and rinse aids stored safely away from children.
Looking at the bigger picture
At its core, this discussion is about balance. Dishwasher pods and rinse aids are not nature’s enemy, nor are they villains in our kitchens. For most of us, they’re part of the trade-off between convenience and risk we face in modern living. However, when used as designed, they contribute negligible risk while saving time and water compared to handwashing.
More importantly, gut health isn’t about one product or behavior—it’s about your overall lifestyle. By focusing on the basics, like diet, exercise, and hydration, you set the foundation for a resilient gut, regardless of the rinse aid you use.
Let’s keep chatting
As a dietitian, I always aim to have a balanced approach to my recommendations – real life isn’t perfect, and we don’t need to stress ourselves out unnecessarily – it isn’t good for our gut health!
If you found this article to be helpful, I invite you to check out a few other recent posts to keep this conversation going:
- Coffee and Your Gut: Is it Good for Gut Health?
- Should You Take Collagen for Your Gut Health?
- Is Your Diet Making You Constipated?
Take Charge of Your Gut Health
At the end of the day, our overall health and wellness are nourished by all of our habits, not just one meal, one food, or one cleaning product. If you’d rather skip traditional dishwasher pods and rinsing agents – that’s great! If you’d rather not spend quite so much on the more natural products (or have no interest in washing your dishes by hand), that’s a-okay, too.
While our understanding of gut health continues to expand, it’s comforting to know that science provides clarity in this space. If you’d like help understanding how everyday habits impact your gut health or want personalized tips for a healthier lifestyle, I’m here to help.
Sign up for my newsletter to take a deeper look into building a gut-friendly lifestyle that works for you!
Amanda is a pizza loving registered dietitian nutritionist specializing in mindfulness and gut health. She quickly realized that gut health goes beyond the gut; it is also about honoring our gut feelings. She is the creator of The Mindful Gut™ which uses science and strategy to help people improve their gut health.
