You may have seen a headline saying most of us do not eat enough fibre and wondered whether that includes you. For many people it does, and the reason is rarely a lack of effort. A white-bread sandwich, a quick pasta dinner and a biscuit at three o'clock can add up to a day that looks healthy and is quite low in fibre. The encouraging part is that a few small swaps close most of the gap.
How Much Fibre Do UK Adults Need?
UK guidance from the Scientific Advisory Committee on Nutrition suggests adults aim for an average of around 30g of fibre a day, and most adults in the UK fall well short of that.* That is a population guideline for adults eating a typical diet, not a personal target or advice for any condition, and what suits your digestion may differ. If you are curious where your own day sits, my fibre calculator gives a rough picture from the foods you eat.
Why Going Slowly Matters
The classic mistake is to raise fibre all at once. Gut bacteria ferment fibre, and a sudden jump can bring wind, bloating and discomfort that makes people give up. Add one change every few days, keep portions of new foods small to start, and drink enough fluid so the fibre can do its job.
The type of fibre matters too. Soluble fibre, found in oats, beans and some fruit, and insoluble fibre, found in wholegrains and the skins of vegetables, behave differently, and sensitive guts often react differently to each. My article on soluble and insoluble fibre explains the difference. If you have IBS or another gut condition, I work alongside your doctor, especially if you notice blood in your stools, unexplained weight loss, anaemia, a lasting change in bowel habit or new symptoms over 50, while I help with the everyday food side.
Easy Swaps Using UK Supermarket Foods
- Bread: choose wholemeal or seeded wholemeal instead of white, and check that wholemeal flour is the first ingredient.
- Breakfast: porridge oats or a wholegrain cereal with fruit and seeds, checking the sugar colour on the front of the pack.
- Beans and lentils: add a tin of beans, chickpeas or lentils to a bolognese, curry, stew or soup, and rinse them first.
- Potatoes: leave the skin on for jacket, new or roast potatoes.
- Rice and pasta: try half brown and half white rice, or wholewheat pasta, as a first step.
- Snacks: oatcakes, an apple with its skin, a small handful of nuts, or hummus with carrot sticks.
- Frozen vegetables: keep a bag of peas, spinach or mixed vegetables to add bulk to any meal.
Reading Fibre on UK Labels
Fibre is listed in the nutrition table on the back of the pack, not in the front-of-pack colours. Compare per 100g, not per portion, because portions vary. In the UK, a food can be described as a source of fibre at 3g or more per 100g and as high in fibre at 6g or more per 100g. Check the ingredient list as well: a loaf with seeds added to white flour can look healthier than it is, and some "high fibre" products reach their number with added inulin or chicory root fibre, which suits some guts less well than the fibre in whole foods.
Common Slip-Ups
- Changing everything at once: three new high-fibre foods in one day is a recipe for discomfort. One new food every few days is plenty.
- Forgetting fluid: fibre needs water to move through comfortably, so keep a glass or bottle nearby.
- Relying on "added fibre" products: bars, cereals and drinks that reach a high number with added fibre are not the same as whole foods, which also bring vitamins, minerals and variety.
- Judging too soon: your gut can take a couple of weeks to settle into a new pattern, so give each change a fair run before deciding it does not suit you.
A Gradual Day of Eating
- Breakfast: porridge with berries and a spoonful of mixed seeds.
- Lunch: lentil soup with a slice of seeded wholemeal bread and a side salad.
- Snack: an apple with a few almonds.
- Dinner: a chickpea and spinach curry with brown rice, or a vegetable stir-fry with frozen mixed vegetables and wholewheat noodles.
If you also like the idea of variety, my guide to eating 30 plants a week pairs naturally with this one. For the wider picture, see my article on the benefits of fibre.
If you have raised your fibre and feel more bloated or sluggish than before, or your household's meals leave little room for extra beans and wholegrains, the issue is usually the type, the pace or the way it fits around your week, not a lack of discipline. That is the moment a plan built around your digestion and routine does more than a list of swaps can. You can look at my nutrition services and use my contact page to start.
