How to Get 30g of Fibre a Day UK

TL;DR: The NHS recommends 30g of fibre daily, but the average UK adult only manages around 18g. Fibremaxxing — strategically adding fibre-rich foods to your meals — is the simplest way to close the gap. Think wholemeal swaps, extra beans and lentils, and seeds on your yoghurt. NutraSafe tracks your fibre intake alongside all other nutrients so you can see exactly where you stand each day.

Most of us know fibre is good for us. Fewer of us know how much we actually need, or how far short we are falling. The good news? Getting to 30g does not require a radical diet overhaul — just a handful of smart swaps and a bit of awareness. Here is everything you need to know, with practical UK-focused advice.

Why 30g? The NHS Fibre Target

The NHS recommends that adults eat 30g of fibre per day. This target is based on extensive research into the relationship between dietary fibre and long-term health outcomes. The Scientific Advisory Committee on Nutrition (SACN) set this figure in 2015 after reviewing the evidence on fibre and chronic disease.

What fibre does for your body

Gut health: Fibre feeds the beneficial bacteria in your gut microbiome. A diverse, well-fed microbiome is linked to better digestion, stronger immunity, and even improved mental health via the gut-brain axis.
Heart health: Soluble fibre (found in oats, beans, and barley) helps lower LDL cholesterol. The British Heart Foundation highlights fibre as one of the most important dietary factors for cardiovascular health.
Blood sugar control: Fibre slows the absorption of sugar into the bloodstream, helping to prevent the spikes and crashes that lead to energy dips and cravings. This is particularly relevant for type 2 diabetes prevention.
Satiety and weight management: High-fibre foods take longer to chew and digest, keeping you fuller for longer. This naturally reduces calorie intake without the need to count every calorie.
Bowel health: Fibre adds bulk to stools and promotes regular bowel movements. The NHS lists adequate fibre intake as one of the primary ways to prevent constipation and reduce the risk of bowel cancer.

Why most Brits fall short

Despite the clear benefits, the average UK adult eats only around 18g of fibre per day — just 60% of the target. The reasons are straightforward: white bread outsells wholemeal, many popular meals are built around refined carbohydrates, and fibre-rich foods like beans and lentils are not a staple in most British diets the way they are in Mediterranean or South Asian cuisines.

The fibremaxxing trend

“Fibremaxxing” is a term that has gained traction on social media in 2025–2026. It refers to the deliberate practice of maximising your daily fibre intake through strategic food choices. Unlike fad diets, fibremaxxing is fully aligned with NHS and British Nutrition Foundation guidance — it is simply a catchy name for something dietitians have been recommending for decades. The trend has helped make fibre “cool” again, particularly among younger adults.

High-Fibre Foods UK

These are common, affordable foods you can find in any UK supermarket. The fibre values shown are per typical serving, based on data from the British Nutrition Foundation and NHS.

Food	Serving	Fibre (g)
Weetabix	2 biscuits (37.5g)	3.8
Baked beans	Half a tin (200g)	7.4
Wholemeal bread	2 slices (80g)	5.4
Porridge oats	40g (dry)	3.6
Red lentils	80g (cooked)	3.2
Chickpeas	Half a tin (120g)	6.1
Broccoli	80g (cooked)	2.6
Almonds	30g (small handful)	3.5
Chia seeds	15g (1 tbsp)	5.1
Raspberries	80g	5.0

Notice that a single tablespoon of chia seeds delivers over 5g of fibre. A small handful of almonds gives you 3.5g. These are easy additions to meals you are already eating — no cooking required.

A Sample 30g Fibre Day

Here is what a realistic day of eating looks like when you are aiming for 30g+. These are ordinary UK meals — nothing exotic, nothing expensive.

Breakfast — 9.4g fibre

Porridge made with 40g oats (3.6g), topped with a sliced banana (1.4g), a handful of raspberries (2.5g), and a tablespoon of chia seeds (1.9g).

Lunch — 10.2g fibre

Wholemeal pitta (3.8g) filled with hummus, mixed salad, and half a tin of chickpeas (6.1g). An apple on the side (2.4g). Swap the pitta for two slices of wholemeal bread if you prefer a sandwich — similar fibre content.

Dinner — 9.8g fibre

Wholemeal pasta (4.5g) with a homemade tomato and lentil sauce. The red lentils (3.2g) and a side of broccoli (2.1g) bring the total up. A simple swap of white pasta for wholemeal adds roughly 3g of fibre to the meal.

Snacks — 3.5g fibre

A small handful of almonds (3.5g) mid-afternoon. Other good options: a pear (3.1g), two oatcakes (1.8g), or a couple of dried figs (3.0g).

Daily total: 32.9g fibre

That is over the 30g target without any supplements, protein bars, or unusual ingredients. Every item on this list is available at Tesco, Aldi, Asda, Sainsbury’s, or any other UK supermarket.

How to Track Fibre with NutraSafe

Knowing which foods are high in fibre is helpful, but knowing exactly how much you are eating each day is what makes the difference. This is where tracking comes in.

Barcode scanning

Scan the barcode on any UK food product and NutraSafe pulls in the full nutritional breakdown — including fibre. No manual entry needed. The database covers over 1.5 million products from UK supermarkets.

Daily fibre alongside everything else

Your food diary shows fibre intake alongside vitamins, minerals, macros, and calories. You can see at a glance whether you are on track for 30g or falling short. Fibre is not hidden away in a sub-menu — it is front and centre.

Custom targets

Set your own daily fibre target if 30g is not right for you. If you are working up gradually from 18g, you might set a target of 22g for the first week, 25g the next, and so on. NutraSafe tracks your progress against whatever goal you set.

Spot patterns over time

The app shows your fibre intake over weeks and months, making it easy to spot which days you tend to fall short (weekends, often) and which meals are doing the heavy lifting. Data beats guesswork.

Fibremaxxing Tips

Quick wins to boost your fibre

These small swaps can add 10–15g of fibre to your day without changing what you eat — just how you eat it.

Swap white for wholemeal: Bread, pasta, rice, wraps — the wholemeal version of almost everything has 2–3x the fibre. This single swap can add 6–8g per day.
Add beans or lentils to meals: Stir half a tin of beans into a curry, chilli, soup, or pasta sauce. It adds 5–7g of fibre and makes the meal more filling.
Keep the skin on potatoes: A baked potato with skin has almost twice the fibre of one without. The same goes for apples, pears, and carrots — the skin is where much of the fibre lives.
Snack on nuts and fruit: A handful of almonds (3.5g) or a pear (3.1g) beats a packet of crisps (0.8g) for fibre and satiety.
Add seeds to yoghurt or porridge: A tablespoon of chia seeds (5.1g) or flaxseeds (2.8g) stirred into breakfast adds fibre without changing the flavour.
Choose high-fibre cereals: Weetabix, bran flakes, and porridge oats are all solid choices. Check the label — aim for at least 3g of fibre per serving.
Eat more vegetables with dinner: An extra portion of peas (4.5g), sweetcorn (2.1g), or broccoli (2.6g) on the side adds fibre and nutrients.

Fibre and Gut Health

The connection between fibre and gut health runs deeper than just keeping you regular. Fibre is the primary fuel source for the trillions of bacteria that make up your gut microbiome.

Feeding your microbiome

When you eat fibre, it passes through your stomach and small intestine largely undigested. In the large intestine, gut bacteria ferment it, producing short-chain fatty acids (SCFAs) that nourish the cells lining your colon, reduce inflammation, and support immune function. A diverse range of fibre sources (from different fruits, vegetables, grains, and legumes) promotes a more diverse microbiome, which is associated with better overall health.

IBS and fibre: a word of caution

If you have irritable bowel syndrome (IBS), the relationship with fibre is more nuanced. Some types of fibre — particularly those found in foods high in FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols) — can worsen symptoms like bloating, gas, and abdominal pain in people with IBS.

This does not mean you should avoid fibre altogether. Soluble fibre from oats, linseeds, and peeled vegetables is generally well tolerated. The key is choosing the right types and increasing intake gradually. If you are managing IBS, our FODMAP tracker and IBS food diary guides may help.

Increasing fibre gradually

Whether or not you have IBS, the NHS recommends increasing your fibre intake gradually over several weeks rather than jumping from 18g to 30g overnight. A sudden increase can cause bloating and discomfort as your gut bacteria adjust. Drink plenty of water alongside higher fibre intake — fibre absorbs water, and adequate hydration helps it move through your system smoothly.

Track Your Fibre Intake

Scan barcodes, see your daily fibre total alongside every other nutrient, and set custom targets. Know exactly where you stand — no guesswork.

Download NutraSafe Free

Frequently Asked Questions

Is 30g of fibre a lot?

It can feel like a lot if you are used to the UK average of around 18g per day, but 30g is very achievable with a few strategic swaps. Two Weetabix with a banana for breakfast, a lentil soup for lunch, and a wholemeal pasta dinner with vegetables can get you there without any supplements. The key is building fibre into meals you already enjoy rather than overhauling your entire diet.

Can too much fibre be bad for you?

Yes, increasing fibre too quickly can cause bloating, gas, and stomach cramps. The NHS recommends increasing your fibre intake gradually over several weeks and drinking plenty of water. If you have IBS or another digestive condition, some high-fibre foods (particularly those high in FODMAPs) may worsen symptoms, so it is worth speaking to a GP or dietitian before making significant changes.

What is the best fibre supplement UK?

The NHS and British Dietetic Association recommend getting fibre from food rather than supplements wherever possible, as whole foods provide additional nutrients and benefits that supplements do not. If you do use a supplement, psyllium husk is one of the most well-evidenced options. However, most people can reach 30g through diet alone with the right food choices — supplements should be a last resort, not a first step.

Does fibre help you lose weight?

High-fibre foods tend to be more filling, which can help with weight management by reducing overall calorie intake. Fibre slows digestion and helps stabilise blood sugar levels, both of which reduce the urge to snack. Studies cited by the British Nutrition Foundation show that people who eat more fibre tend to have a healthier body weight, though fibre alone is not a magic solution — it works best as part of an overall balanced diet.

What does fibremaxxing mean?

Fibremaxxing is a term that gained popularity in 2025–2026 on social media, referring to the practice of deliberately maximising your daily fibre intake through strategic food choices. It involves swapping low-fibre options for high-fibre alternatives, adding fibre-rich foods to every meal, and tracking your intake to hit or exceed the 30g NHS target. It is essentially mindful eating with a focus on fibre.