The 6 Worst Foods for Gut Health, According to a Colon Hydrotherapist By Joel Grace

Colon hydrotherapists see it all: we can tell if you’re drinking enough water, we can tell if you’re eating the right amount of fruit and veggies, and we can even tell if you chew your food thoroughly or not. We have extensive knowledge of the digestive system and its impact on your overall well-being, because we quite literally see what’s coming out of you! So with all this ‘insider’ knowledge, let’s explore some of the worst foods for your gut, and how avoiding them as much as possible can considerably improve your gut health.

High-Fat Foods

Did you know that fried food consumption is associated with lower diversity in your gut bacteria? In contrast, a diet rich in fruits and raw vegetables is linked to higher diversity. So, we can see that every food we eat is either fuelling or harming our gut microbiome. Why is this important to know? Because a less-diverse microbiome is correlated with various chronic health issues such as obesity, heart disease and type-2 diabetes, let alone a number of IBS-related disorders. The unhealthy saturated and trans fats found in fried foods, processed meats, and high-fat dairy products disrupt the integrity of the gut lining and trigger inflammation. Instead, choose healthier fats like avocados, nuts, and seeds, which provide essential nutrients without compromising gut health.

Refined Grains

Refined grains, such as white bread, white rice, and pasta made from refined flour, are stripped of their fibre content and essential nutrients. These refined carbohydrates are quickly broken down into sugar, leading to a spike in blood sugar levels and causing potential disruptions in gut bacteria. Additionally, with the fibre content removed, there’ll be less roughage to sweep through your colon, creating an increased likelihood of constipation and buildup leading to impaction. To keep your gut at its happiest, opt for whole grains like brown rice, quinoa, oats, and sprouted breads to provide the slow-digesting fibre you need.

Refined Sugar

Refined sugar (i.e. white cane sugar) is a major culprit when it comes to disrupting our gut microbiome. On one hand, consuming high-sugar foods and sugary beverages can disrupt the balance of gut bacteria and has been linked to inflammation, which can irritate the gut and destroy helpful bacteria. On the other hand, harmful bacteria and yeast thrive on sugar, contributing to digestive issues and a weakened immune system. To support a healthy gut, opt for natural sweeteners like honey, maple syrup or moderate amounts of unrefined coconut sugar.

Artificial Sweeteners

Whilst we’re talking about all things sweet, by now most of us know we should be avoiding artificial sweeteners such as aspartame, saccharin, and sucralose. But do you remember why it’s best to avoid them? These common additives can negatively impact gut health by altering the composition of gut bacteria and promoting glucose intolerance. To support a healthy gut, it is advisable to opt for natural sweeteners like stevia or moderate amounts of unrefined sugar.


For many people, dairy products can be problematic for gut health. We know that many people are lactose intolerant because they lack the enzyme necessary to digest lactose. But did you know many more individuals are lactose sensitive without even realising it? This means that although they don’t lack the enzyme to digest lactose, they still experience bloating, gas, constipation or diarrhea when they consume dairy. Additionally, saturated fats found in full-fat dairy products may contribute to inflammation and digestive discomfort. Some dairy products also contain potentially harmful hormones and antibiotics, things that we just don’t want in a healthy gut.


Regular alcohol consumption can take a toll on the gut. Alcohol irritates the mucosal lining of the digestive system, leading to inflammation and damage to the delicate balance of gut bacteria. This disruption can contribute to conditions such as leaky gut syndrome, allowing bacterial toxins to enter your system. This in turn can lead to inflammation of other organs like the liver, and also leaves you at an increased risk of developing a variety of digestive disorders. Aside from this, alcohol can have a very dehydrating effect on your body, which I’ve seen cause constipation in clients within 24 hours after drinking. Minimal moderation is key when it comes to alcohol consumption for the sake of maintaining a healthy gut.

Last Word

Right now, you’re probably thinking “well that’s all the fun stuff gone, what foods CAN I eat?”. Don’t stress, the last thing I want is to take the enjoyment out of eating, you’ve still got to keep your tastebuds happy! The key here is balance, and recognising the relationship between what we put in the top end and how it impacts our friendly flora. Colon hydrotherapists specialise in promoting digestive health through natural approaches, including general diet modifications. These recommendations align with the goal of nurturing a balanced gut microbiome, reducing inflammation, and supporting overall well-being. Of course, it is important to consult with your trusted healthcare professional for personalised guidance based on individual needs and health conditions. By making mindful dietary choices, you can pave the way for a healthier gut and a thriving digestive system.

Contact Joel at:


Vanessa Finnigan is the founder, editor and publisher of Holistic Bliss.
Holistic Bliss is also available to be downloaded as a free App (downloaded in 52 countries) and you can receive notifications about new articles and cover personalities on your phone.

Add comment


Join our e-newsletter and hear about our latest news and insights.


Click on the Cover to Read About Dr Judith Orloff

Welcome Barbara Brewster!

Dom LivKamal’s Medicine Room

Download our FREE Holistic Bliss App!

Pitch, Write and Be Seen by Vanessa Finnigan!

Vanessa Finnigan, founder, being interviewed in Europe

Follow us

Don't be shy, get in touch. We love meeting interesting people and making new friends.

Most popular

Most discussed