9 of The Worst Foods for Gut Health

Published on April 02, 2024

By Gaia Herbs

Gaia Herbs

Your gut microbiome is filled with trillions of microorganisms and microbes that are integral to your overall well-being. The gut microbiome is home to both good and bad bacteria, which both play an essential role in our overall health. 

The food we eat plays an important role in shaping this microbial landscape. Certain foods can nourish our good gut bacteria, supporting diversity and balance. In contrast, others can wreak havoc by empowering the harmful bacteria, causing an imbalance that can lead to poor gut health.REF#3793 Understanding which foods to embrace and which to avoid can provide a roadmap to a healthy gut. 

Here at Gaia Herbs, we believe in nature's healing and restorative powers. Let’s cover the importance of gut health, the best and worst foods, and a few of our supplements that can help. Let Gaia Herbs be your guide on the journey to a balanced and healthy gut microbiota. 

What is the Role of Gut Health in Our Body?

When you think of the gut, you probably think of digestion. But the truth is, the role of our gut health extends far beyond breaking down the food we eat. It's a complex system intricately connected to almost every aspect of our health. 

Let's get a little deeper into the multifaceted roles the gut plays in our body:

  • Digestion: At the most basic level, our gut breaks down the food we eat into smaller molecules that our bodies can absorb and use for energy, growth, and cell repair. A healthy gut ensures strong digestive health, which can help us get the maximum amount of nutrition from our food.
  • Nutrient Absorption: After the digestive process breaks down our food, it's up to the gut to absorb these nutrients and deliver them to the rest of the body. Whether it's vitamins, minerals, proteins, fats, or carbohydrates, our gut is the gateway through which these nutrients enter our bloodstream.
  • Immune System Support: Did you know that around 70-80 percent of our immune cells reside in our gut?REF#3794 These cells constantly communicate with our gut bacteria, creating a strong line of defense against harmful pathogens. A healthy gut microbiome can support a strong immune response.
  • Mood Regulation: Our gut produces many of the same neurotransmitters found in the brain, including serotonin, a key player in mood regulation.REF#3795 This gut-brain connection may explain why our gut health can impact our mental health.
  • Metabolic Function: Our gut bacteria play an important role in our metabolic function, influencing how we store fat, balance blood sugar levels, and respond to hunger and fullness cues. Research suggests that a diverse gut microbiome filled with beneficial bacteria can support a healthy metabolism essential for weight loss and weight management.REF#3796
  • Cardiovascular Health: Emerging research suggests that our gut health may be linked to our cardiovascular health.REF#3797 Certain healthy bacteria produce compounds that can influence blood pressure and cholesterol levels, highlighting the potential role of gut health in heart disease prevention.
  • Hormonal Balance: Our gut bacteria can influence the production and regulation of various hormones, including insulin and estrogen.REF#3798 This means that our gut health can impact everything from blood sugar to reproductive health.
  • Skin Health: Have you ever noticed a breakout after a few days of consuming carbs, sugar, and dairy? Well, that's your gut-skin axis at work.REF#3799 A healthy gut can contribute to a healthy complexion, while an imbalanced gut can lead to skin issues like acne and eczema.
  • Detoxification: Our gut plays a vital role in detoxification, helping to eliminate waste and toxins from our body.REF#3800 A healthy gut ensures regular bowel movements, crucial for avoiding constipation and achieving adequate detoxification.

What Are the Foods Known to Disrupt Gut Health?

Certain foods are well known for disrupting the delicate balance of our gut microbiome, leading to digestive discomfort and potentially affecting our overall health. 

Let's take a closer look at these culprits so you’ll know what you need to eliminate from your diet:

Processed Foods

Processed foods, which sadly make up a significant portion of the average American diet, are one of the biggest offenders regarding gut health. These foods often contain a high amount of preservatives in the form of added sugar and salt, all of which can disrupt our gut flora. They're often low in fiber too, which our gut bacteria need to thrive.

Sugary Drinks

Sugary drinks like sodas and fruit juices can wreak havoc on our gut health. The high sugar content can feed harmful bacteria in our gut, causing an imbalance in our gut microbiome.REF#3801 They also provide virtually no nutritional value and can contribute to weight gain.

Artificial Sweeteners

You might think you're doing your gut a favor by switching to artificial sweeteners like sucralose, saccharin, and aspartame, but research suggests otherwise. These sweeteners can negatively affect our gut bacteria and may lead to glucose intolerance, a major risk factor for diabetes.REF#3802

High-Fat Foods

Foods high in unhealthy fats, such as fast food and red meat, can inflame the gut and slow down digestion. This can lead to bloating and discomfort and may disrupt the balance of bacteria in our gut.


In moderation, certain types of alcohol, like red wine, can have a beneficial effect on our gut health. However, excessive alcohol consumption can damage the cells lining our gut, impair our gut's ability to absorb nutrients, and lead to an overgrowth of harmful bacteria or a leaky gut.REF#3803

Consider alternatives to alcohol if you are interested in cutting back or cutting it out all together.

Fried Foods

Fried foods are high in unhealthy fats and often cooked at high temperatures, producing harmful compounds.REF#3804 These factors can lead to inflammation in the gut and disrupt our gut microbiome.

Dairy Products

For those with lactose intolerance, dairy products can cause digestive distress. But even for those who can digest lactose, some dairy products, especially highly processed ones, can disrupt the gut microbiome.REF#3805

Artificial Additives

Artificial additives, often found in processed foods, can harm our gut bacteria.REF#3806 These include emulsifiers, which are used to improve food texture and extend shelf life, and the previously mentioned artificial sweeteners.


Gluten, a protein found in wheat, barley, and rye, can cause digestive issues for some people, especially those with celiac disease or gluten sensitivity.REF#3807 Even for those without these conditions, a diet high in gluten-rich foods like baked goods, pasta, white bread, and crackers can potentially disrupt the gut microbiome.

What are the Best Foods For Supporting Gut Health? 

The journey to optimal gut health isn't just about avoiding the foods that can harm your gut microbiome. It's also about embracing the foods that can nourish and support it. These foods are rich in nutrients that your gut bacteria love. 

Let's explore some of the best foods for supporting gut health:

  • Apples: An apple a day can keep the doctor away while also supporting your gut health. Apples are rich in pectin, a type of fiber that acts as a prebiotic, feeding your good gut bacteria. They also contain polyphenols, antioxidants that have health benefits for your gut.REF#3808
  • Artichokes: Artichokes are considered a prebiotic food as they provide nourishment for your gut bacteria. They're also high in fiber, which can help support regular bowel movements.
  • Bananas: Bananas are easy on the gut and can help restore health to your gut microbiome. They're rich in fiber and contain fructooligosaccharides, a type of prebiotic that can stimulate the growth of beneficial gut bacteria.REF#3809
  • Beets: Beets are high in fiber and have a high water content, which can help support healthy digestion. They also contain betaine, a nutrient that encourages optimal liver function and helps with detoxification.REF#3810
  • Fennel: Fennel is known for its ability to soothe digestive discomfort, including bloating and gas. It can also stimulate digestion and help maintain regular bowel movements.
  • Garlic: Garlic is a delicious flavor enhancer and a powerful prebiotic. It can stimulate the growth of beneficial gut bacteria and help maintain a balanced gut microbiome.
  • Ginger: Ginger has been used for centuries to soothe digestive discomfort. It can help support proper gastric emptying, potentially helping to ease symptoms like bloating and constipation.
  • Kefir: Kefir is a fermented milk product that's packed with probiotics. These beneficial bacteria can help balance your gut microbiome and boost your gut health.
  • Kimchi: This spicy Korean side dish is a type of fermented food, which is great news for your gut. The fermentation process encourages the growth of beneficial bacteria, making kimchi a probiotic powerhouse.
  • Kombucha: Kombucha is a fermented tea that's rich in probiotics. Regular consumption can help populate your gut with beneficial bacteria, supporting a healthier gut microbiome.
  • Leafy Greens: Leafy green veggies, like spinach and kale, are high in fiber and low in sugar, making them great for your gut. They're also rich in essential vitamins and minerals.
  • Leeks: Leeks are high in prebiotic fiber, which can stimulate the growth of beneficial gut bacteria. They're also a good source of vitamin K.
  • Lentils: Lentils are legumes — like other legumes, they're high in fiber and protein. They can support gut health by encouraging regular bowel movements and feeding your gut bacteria.
  • Oregano: Oregano is more than just a flavorful herb. It also has cleansing properties that can help keep your gut microbiome balanced.
  • Peppermint: Peppermint has been used for centuries to soothe digestive discomfort. It can help soothe the gastrointestinal tract muscles, easing symptoms like bloating and indigestion.
  • Sauerkraut: Like kimchi, sauerkraut is a fermented food rich in probiotics. It can support gut health by populating your gut with beneficial bacteria.
  • Tempeh: Tempeh is a fermented soybean product, making it a great source of probiotics. It's also high in protein and fiber.
  • Turmeric: Turmeric is well known for its soothing properties, which can be beneficial for supporting a healthy gut lining
  • Whole Grains: High-fiber, whole grains can help maintain regular bowel movements. They also contain prebiotics that can feed your gut bacteria.
  • Yogurt: Yogurt is considered a probiotic food containing beneficial bacteria. Regular consumption can help balance your gut microbiome and support gut health.

How Can Gaia Herbs Support Your Gut Health?

With Gaia Herbs by your side, you're not alone. We’re committed to guiding you on your wellness journey with a range of organic herbal supplements designed to support your gut health. 

Our Gut Revival is a blend of herbs designed to support a healthy gut. It combines AstraGin®, a blend of Astragalus and Panax Notoginseng, known for their ability to support healthy intestinal permeability and digestive lining. 

This blend also includes Gotu Kola, Jujube fruit and seed, Lemon Balm, and Chamomile flowers, all known for their potential to support gut vitality and digestion.

Next up is our Sauerkraut Postbiotic, a supplement made from fermented sauerkraut juice extract that works to cleanse and promote healthy function in the lower GI tract. This postbiotic is designed to support a healthy microbiome, maintain regularity, and bolster nutrient absorption, providing a comprehensive approach to gut health.

And let's not forget about Oil of Oregano. This herbal supplement helps maintain the body’s natural defenses by providing antioxidant support. It's designed to bolster a healthy immune system and provides short-term wellness support when you need it most.

The Bottom Line

The overall importance of your gut health cannot be overstated. The foods we consume play an important role in maintaining a healthy gut microbiome and avoiding foods that disrupt this balance is key. 

Incorporating beneficial foods into your diet and considering adding a Gaia Herbs digestive supplement can provide further support for your gut health. Remember, your gut health is unique to you, and Gaia Herbs is here to guide you every step of the way. 

Trust your gut and let Gaia Herbs be your guide.


  • 1. Zhang P. (2022), "Influence of Foods and Nutrition on the Gut Microbiome and Implications for Intestinal Health", International journal of molecular sciences, 23(17), 9588.
  • 2. Wiertsema, S. P., van Bergenhenegouwen, J., Garssen, J., & Knippels, L. M. J. (2021), "The Interplay between the Gut Microbiome and the Immune System in the Context of Infectious Diseases throughout Life and the Role of Nutrition in Optimizing Treatment Strategies", Nutrients, 13(3), 886.
  • 3. Margolis, K. G., Cryan, J. F., & Mayer, E. A. (2021), "The Microbiota-Gut-Brain Axis: From Motility to Mood ", Gastroenterology, 160(5), 1486–1501.
  • 4. Davis C. D. (2016), "The Gut Microbiome and Its Role in Obesity", Nutrition today, 51(4), 167–174.
  • 5. Xu, H., Wang, X., Feng, W., Liu, Q., Zhou, S., Liu, Q., & Cai, L. (2020), "The gut microbiota and its interactions with cardiovascular disease", Microbial biotechnology, 13(3), 637–656.
  • 6. Qi, X., Yun, C., Pang, Y., & Qiao, J. (2021), "The impact of the gut microbiota on the reproductive and metabolic endocrine system", Gut microbes, 13(1), 1–21.
  • 7. De Pessemier, B., Grine, L., Debaere, M., Maes, A., Paetzold, B., & Callewaert, C. (2021), "Gut-Skin Axis: Current Knowledge of the Interrelationship between Microbial Dysbiosis and Skin Conditions", Microorganisms, 9(2), 353.
  • 8. Strand J. (2022), "Distinctive Detoxification: The Case for Including the Microbiome in Detox Strategy ", Integrative medicine (Encinitas, Calif.), 21(4), 26–30.
  • 9. Di Rienzi, S. C., & Britton, R. A. (2020) , "Adaptation of the Gut Microbiota to Modern Dietary Sugars and Sweeteners", Advances in nutrition (Bethesda, Md.), 11(3), 616–629.
  • 10. Del Pozo, S., Gómez-Martínez, S., Díaz, L. E., Nova, E., Urrialde, R., & Marcos, A. (2022), "Potential Effects of Sucralose and Saccharin on Gut Microbiota: A Review.", Nutrients, 14(8), 1682.
  • 11. Bode, C., & Bode, J. C. (1997), "Alcohol's role in gastrointestinal tract disorders.", Alcohol health and research world, 21(1), 76–83.
  • 12. Qi L. (2021), "Fried Foods, Gut Microbiota, and Glucose Metabolism.", Diabetes care, 44(9), 1907–1909.
  • 13. Aslam, H., Marx, W., Rocks, T., Loughman, A., Chandrasekaran, V., Ruusunen, A., Dawson, S. L., West, M., Mullarkey, E., Pasco, J. A., & Jacka, F. N. (2020), "The effects of dairy and dairy derivatives on the gut microbiota: a systematic literature review.", Gut microbes, 12(1), 1799533.
  • 14. Laudisi, F., Stolfi, C., & Monteleone, G. (2019), "Impact of Food Additives on Gut Homeostasis.", Nutrients, 11(10), 2334.
  • 15. Cenni, S., Sesenna, V., Boiardi, G., Casertano, M., Russo, G., Reginelli, A., Esposito, S., & Strisciuglio, C. (2023), "The Role of Gluten in Gastrointestinal Disorders: A Review.", Nutrients, 15(7), 1615.
  • 16. Liu, S., Cheng, L., Liu, Y., Zhan, S., Wu, Z., & Zhang, X. (2023), "Relationship between Dietary Polyphenols and Gut Microbiota: New Clues to Improve Cognitive Disorders, Mood Disorders and Circadian Rhythms.", Foods (Basel, Switzerland), 12(6), 1309.
  • 17. Dou, Y., Yu, X., Luo, Y., Chen, B., Ma, D., & Zhu, J. (2022), "Effect of Fructooligosaccharides Supplementation on the Gut Microbiota in Human: A Systematic Review and Meta-Analysis.", Nutrients, 14(16), 3298.
  • 18. Arumugam, M. K., Paal, M. C., Donohue, T. M., Jr, Ganesan, M., Osna, N. A., & Kharbanda, K. K. (2021), "Beneficial Effects of Betaine: A Comprehensive Review.", Biology, 10(6), 456.