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How to Prevent Disease by Focusing on Your Gut

A diet rich in fibre, fermented foods and probiotics supports a healthy gut microbiome — while processed foods, sugar, alcohol and stress quietly disrupt it. Here is what to eat, what to limit, and the everyday habits that keep your gut, and your risk of disease, in check.

Article·3 min read·Published 20 Sep 2026·By Christine Phillips
Gut-friendly wholefoods, fibre and fermented foods

One of the most important steps for caring for the gut is to eat a diet rich in fibre, fermented foods, and probiotics. Fibre is important for maintaining regular bowel movements and supporting the growth of beneficial bacteria. Fermented foods, such as yogurt, kefir, sauerkraut, and kimchi, are rich in probiotics, which can help to support a healthy gut microbiome. Probiotic supplements can also be beneficial for those who don't consume fermented foods regularly.

It's also important to limit processed foods, sugar, and alcohol as they can have a negative impact on the gut microbiome. Processed foods are often high in sugar, salt, and unhealthy fats, which can lead to an overgrowth of harmful bacteria. Alcohol can also disrupt the balance of the gut microbiome and increase inflammation in the gut.

Managing stress is also important for gut health as stress can disrupt the balance of the gut microbiome. Stress can lead to inflammation in the gut and can also disrupt the balance of hormones that regulate digestion.

It's also important to be active and maintain a healthy weight, as obesity can increase the risk of gut-related diseases such as IBD and IBS.

Gut-disrupting foods

Certain foods can disrupt the balance of the gut microbiome and lead to gut dysbiosis. Here are some examples of gut-disrupting foods:

  • Processed foods: Often high in sugar, salt, and unhealthy fats, which can lead to an overgrowth of harmful bacteria. They can also be low in fibre and nutrients, which can negatively impact the gut microbiome.
  • Refined carbohydrates: Foods such as white bread, pasta, and pastries are high in refined carbohydrates and can lead to an overgrowth of harmful bacteria in the gut.
  • Artificial sweeteners: Sweeteners such as aspartame, saccharin, and sucralose have been shown to negatively impact the gut microbiome and lead to gut dysbiosis.
  • Alcohol: Can disrupt the balance of the gut microbiome and increase inflammation in the gut. It can also dehydrate the body and cause diarrhoea, which can lead to an imbalance of gut bacteria.
  • Antibiotics: Can disrupt the balance of the gut microbiome by killing off both harmful and beneficial bacteria, and can lead to the overgrowth of resistant bacteria in the gut, which can be difficult to treat.
  • Trans fats: Commonly found in processed and fried foods, trans fats have been shown to negatively impact the gut microbiome and increase inflammation in the gut.

It's important to note that everyone's gut is different, and what may be disruptive to one person's gut may not be disruptive to another's.

If you are looking for more personalised guidance, do drop me a message — book a free 20-minute discovery call.