When we think about tracking our health, we often think of things that can be measured with a test: blood glucose, cholesterol or vitamin levels, for example. Fibre is different. There isn’t a blood test or scan that can tell you whether you ate enough fibre today. The practical way to understand your fibre intake is to look at the food you eat.

Despite not being digested in the same way as most carbohydrates, fibre plays an important role in digestive health and is associated with a range of wider health benefits. Understanding where fibre comes from and finding simple ways to include more of it can make a meaningful difference to your everyday diet.

What Is Fibre and Why Is It Important?

Dietary fibre is a type of carbohydrate naturally found in plant foods such as fruit, vegetables, whole grains, beans, lentils, nuts and seeds. Unlike most carbohydrates, fibre isn’t fully broken down and absorbed in the small intestine. Instead, it passes into the large intestine, where some types of fibre are fermented by the bacteria that live there.

Fibre is often divided into two broad categories:

  • Insoluble fibre does not dissolve in water. It adds bulk to stools and helps food and waste move through the digestive system, supporting regular bowel movements.
  • Soluble fibre dissolves in water and can form a gel-like substance in the gut. Some types of soluble fibre can help lower blood cholesterol and slow the absorption of carbohydrates.

The distinction isn’t always clear-cut as many foods contain a mixture of different types of fibre but both contribute to a varied, fibre-rich diet.

Some fermentable fibres also provide food for bacteria in the gut microbiome. These bacteria break fibre down into compounds that play a role in maintaining a healthy digestive system. Fibre-rich foods can also help you feel fuller for longer, which may make it easier to manage appetite as part of an overall balanced diet.

In the UK, adults are advised to aim for around 30 grams of fibre a day. In practice, average intake is considerably lower, at roughly 18–20 grams per day.

Easy Ways to Increase Your Fibre Intake

If your current diet is relatively low in fibre, small and gradual changes are usually the easiest way to increase it. Adding a lot of fibre suddenly can sometimes cause temporary bloating or wind while your digestive system adjusts.

Here are a few practical ways to add more fibre to everyday meals.

1. Upgrade Your Breakfast

Choose higher-fibre options such as porridge oats, wholewheat biscuits or bran-based cereals. Adding berries, sliced fruit, chia seeds or other seeds can increase the fibre further without completely changing what you normally eat.

2. Leave the Skins On

Where appropriate, keep the skins on fruit and vegetables such as potatoes, apples and pears. The skin often contains a useful amount of fibre, so peeling can remove some of it.

3. Bulk Up Meals with Pulses

Beans, lentils and chickpeas are particularly good sources of fibre. You could add kidney beans to chilli, chickpeas to a salad, lentils to soups and curries, or red lentils to a pasta sauce. You don’t necessarily need to replace the whole meal. Even adding a small amount can increase the fibre content.

4. Choose Higher-Fibre Versions of Everyday Foods

Simple swaps can add up over the day. Try wholemeal or seeded bread instead of white bread, wholewheat pasta instead of white pasta, or brown rice instead of white rice. You don’t need to change everything at once. Even one or two regular swaps can make a noticeable difference.

5. Choose Fibre-Rich Snacks

Fruit, vegetable sticks with hummus, rye crackers, nuts and seeds can all contribute useful amounts of fibre between meals. The aim doesn’t have to be to eliminate biscuits, crisps or other foods you enjoy. Adding more fibre-rich choices alongside them can be a more realistic way to change your overall intake.

Increase Fibre Gradually and Remember Fluids

If you are currently eating relatively little fibre, there is no need to jump straight to 30 grams overnight. Increase your intake gradually so your digestive system has time to adjust. Drinking enough fluids is important too. Fibre absorbs water, and adequate fluid helps stools remain soft and move comfortably through the digestive system. A sudden increase in fibre without enough fluid can sometimes contribute to bloating, discomfort or constipation.

What Does 30 Grams of Fibre Actually Look Like?

Thirty grams can sound quite abstract, but it can build up surprisingly quickly across a normal day.

For example, fibre might come from a combination of porridge oats and berries at breakfast, wholemeal bread at lunch, a piece of fruit as a snack, beans or lentils with dinner, more vegetables alongside your main meals and a small handful of nuts or seeds.

You do not need to get exactly 30 grams every single day or build every meal around fibre.

Tracking your intake can simply help you see roughly where you are, spot foods that contribute more than you expected, and find easy changes that work for the way you already eat.