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Chapter 2 - Gut health: How we can optimise it

author

Josie Porter

published

10/07/2025

Now we’ve learned the importance of gut health, let’s discuss how we can support that inner community of microbes.

Chapter 2 - Gut health: How we can optimise it

Non-Diet Factors That Affect Gut Health

Non-diet factors can also affect our gut health and function:

  • Chronic stress can significantly impact the gut via the two-way gut-brain communication pathway, which may lead to digestive symptoms.

  • Poor sleep quality can disrupt our gut microbiome. When our gut microbes are tired, they don’t function as effectively.

  • Stress and fatigue can reduce physical activity, slow down gut motility, and lead to bloating and constipation.

Therefore, a holistic approach - focusing on movement, sleep, and mindfulness - is essential.

The Role of Diet in Gut Health

When it comes to diet, it’s key to add foods that nourish your gut microbiome and support smooth digestion.

Fibre is a critical element for gut health. It passes through the digestive system undigested until it reaches the large intestine, where it serves as fuel for gut microbes

Well-fed microbes enhance gut microbiome health and energise the body. Fibre also reduces bowel cancer risk and promotes proper gut function

Prebiotics

Some fibre-rich foods are rich in prebiotics. Prebiotics essentially serve as food for beneficial gut bacteria promoting a healthy gut environment.

Sources of prebiotics include:

  • Fruits
  • Vegetables
  • Grains
  • Nuts
  • Legumes
  • Herbal teas
  • A varied diet can provide you with sufficient prebiotics without the need for supplements.

    Fibre

    So how much fibre do we need to be eating? For general health it's recommended that adults get around 30 grams of dietary fibre each day.

    To give your gut micorbes the variety of food they need and to meet your daily fibre needs, aim to eat around 30 diffrerent plant foods in your diet over the course of a week.

    A landmark study found that those who consume about 30+ different plants a week tend to have a more diverse gut microbiome than those who eat 10 or fewer varieties. The number 30 may sound daunting, but it is achievable.

    Besides fruit and vegetables, plant foods also include:

    To summarise, support your gut health by:

    By Josie Porter

    Gut and Weight Management Specialist Dietitian

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