SerpApi.Org
When Kellogg’s introduced Bran Flakes in 1915, they became the world’s first high-fibre breakfast cereal, designed to promote healthy digestion and prevent constipation.
More than a century later, they remain a dependable morning staple. I certainly grew up believing that. Like many parents, my mother regularly served me a bowl before school, convinced it was one of the most nutritious ways to start the day.
Yet under proposed government nutrition reforms, bran flakes could soon be reclassified as junk food. Because many bran flakes contain added glucose syrups derived from wheat or corn starch to improve palatability, some varieties could score as “high in fat, salt or sugar” (HFSS) under the revised nutrition system.
The experts, however, take a different view. Calling bran flakes junk food would be an “oversimplification”, says Dr Sammie Gill, registered dietitian and senior nutrition scientist at the British Nutrition Foundation. “While some bran flakes may be relatively high in sugar, they are also rich in fibre and typically low in saturated fat. What matters most is how foods like these contribute to a balanced diet overall,” Dr Gill says.
So, are bran flakes actually good for you – and which boxes are worth buying?
Jump to:
- The health benefits of bran flakes
- What are the health drawbacks?
- Final verdict
- Which box of bran flakes is best for your health?
The health benefits of bran flakes
Good for the gut
One of bran flakes’ biggest selling points is their fibre content, with around 4g in a typical 30g serving. The NHS recommends adults consume 30g of fibre daily, yet only around 4 per cent of UK adults achieve this target.
Made primarily from wholegrain wheat and wheat bran, bran flakes are rich in insoluble fibre, explains Nichola Ludlam-Raine, specialist registered dietitian and author of How Not to Eat Ultra-Processed. Unlike soluble fibre, insoluble fibre doesn’t dissolve in water, helping food move through the digestive system and supporting regular bowel movements.
Beyond digestive health, fibre has been linked with improved metabolic health and a lower risk of several chronic diseases, Dr Gill adds.
A heart-friendly breakfast
“Choosing a cereal that’s naturally low in saturated fat leaves room to include other nutritious foods, like yogurt, nuts, seeds or fruit, without significantly increasing your overall saturated fat intake,” Dr Gill says.
Additionally, a bowl of bran flakes can contribute towards the recommended three daily servings of wholegrains. Research consistently links higher wholegrain intake with a lower risk of cardiovascular disease and type 2 diabetes. Some studies also suggest modest improvements in LDL (“bad”) cholesterol.
They may help you lose weight
Because they’re high in fibre, bran flakes can help you feel fuller for longer, Ludlam-Raine says, particularly when paired with a protein source such as milk, kefir or yogurt.
Research shows that high-fibre foods require more chewing, slowing down eating, while certain fibres slow digestion and help promote feelings of fullness.
Gut bacteria also ferment some fibres into short-chain fatty acids, which may help regulate appetite and how quickly sugar enters the bloodstream. Together, these effects may help reduce overall calorie intake, potentially aiding weight loss.
They provide useful vitamins and minerals
Many bran flakes are fortified with iron, which helps transport oxygen around the body and can reduce tiredness and fatigue, Ludlam-Raine says. A typical 30g serving provides around 3mg of iron – roughly one-fifth of a woman’s and one-third of a man’s daily requirement.
Additionally, most brands are fortified with B vitamins (like B12 and folic acid) and vitamin D, Dr Gill says. While B vitamins “play a wide range of important roles in the body, including supporting normal energy metabolism”, vitamin D “is essential for bone health”, she explains.
While brands may vary, a 30g serving of Kellogg’s bran flakes contributes 50 per cent of your daily vitamin D needs and roughly a quarter of your daily vitamin B12 needs.
What are the health drawbacks?
1. May aggravate IBS
People with irritable bowel syndrome (IBS) may find bran flakes worsen their symptoms.
Because they’re wheat-based, bran flakes contain fructans – a type of FODMAP [carbohydrates and sugar alcohols that are poorly absorbed in the small intestine] that can trigger bloating, wind and abdominal discomfort in some people with IBS, Dr Gill explains.
For those following a low-FODMAP diet, rice and corn-based cereals such as cornflakes or Rice Krispies may be better tolerated.
2. May be less suitable for those with iron deficiency
Bran is naturally rich in phytates, compounds that can reduce the absorption of minerals such as iron and zinc.
“For most people eating a balanced diet, this isn’t a concern,” Ludlam-Raine says. However, people with iron deficiency may benefit from taking iron supplements at a different time of day and pairing bran flakes with a vitamin C-rich food such as berries or kiwi to help increase iron absorption.
3. Some brands contain more sugar than others
Not all bran flakes are nutritionally identical.
Some varieties contain very little added sugar, while others contain more than 4g per serving, equivalent to one teaspoon. Adults and children aged 11 and over are advised to consume no more than 30g of free sugars a day, making it worth comparing labels before buying.
Final verdict
Despite the headlines, both experts agree that bran flakes remain a nutritious breakfast choice for most people.
“They’re an excellent source of fibre, wholegrains and are often fortified with beneficial vitamins and minerals,” Ludlam-Raine says.
Her advice is to opt for a lower-sugar variety where possible and build a balanced breakfast by adding protein and fruit. Dr Gill recommends topping bran flakes with natural yogurt, sliced banana and a spoonful of nut butter to create a more filling meal.
Which box of bran flakes is best for your health?
Ludlam-Raine gives her verdict on 10 of the most popular supermarket boxes of bran flakes, ranking each out of five stars based on their ingredients list, sugar, fibre, protein and salt content, as well as value for money. The nutritional values are per 30g serving.
Kellogg’s Bran Flakes
“Despite being the original and one of the best-known brands, Kellogg’s bran flakes contain the most added sugar of all those compared and are also among the most expensive,” Ludlam-Raine says.
“They still provide plenty of fibre and useful vitamin and mineral fortification [including iron, vitamin B6, folic acid, vitamin B12 and vitamin D], but there are supermarket own-brand alternatives that offer similar, or even better, nutrition for considerably less money.”
Free From by ASDA Bran Flakes
ASDA’s “free-from” offering is “a useful choice for people with coeliac disease or those avoiding gluten,” Ludlam-Raine says. “However, because they’re made with maize and rice rather than wholegrain wheat, they’re lower in protein than the wheat-based versions.”
For those who need a gluten-free breakfast cereal, they’re nutritionally sound, however the traditional bran flakes tend to offer more fibre and protein, she concludes.
Aldi Harvest Morn Bran Flakes
Aldi’s bran flakes are “good value and nutritionally very similar to several other supermarket own brands, although the fibre content is slightly lower than some competitors,” Ludlam-Raine says.
“Overall, it’s a perfectly reasonable breakfast cereal but not quite among the very best.”
Essential Waitrose Bran Flakes
Waitrose’s budget bran flakes are “a perfectly respectable cereal with a good nutritional profile, but they don’t really stand out from the cheaper supermarket alternatives,” Ludlam-Raine says.
“Unless you particularly enjoy the flavour, there are better-value options available.”
Tesco Bran Flakes
Among the cheapest options on the list, Tesco’s bran flakes are “high in fibre and relatively low in sugar compared with Kellogg’s,” Ludlam-Raine says.
“The added vitamins and minerals are a bonus, making these a sensible everyday breakfast choice.”
ASDA Bran Flakes
ASDA’s offering is “very similar nutritionally to Morrisons, offering plenty of fibre, low salt and good fortification at an affordable price,” Ludlam-Raine summarises.
“Like most traditional bran flakes they contain some added sugar, but overall they’re a great-value breakfast cereal.”
Morrisons Bran Flakes
“A very solid all-round cereal with high fibre, good protein, very low salt and excellent value,” Ludlam-Raine says.
“The ingredients list is fairly typical, with some added sugar and barley malt extract, but nutritionally they’re difficult to fault for the price.”
Sainsbury’s Wholegrain Bran Flakes
Sainsbury’s offering is one of the strongest supermarket own-brand options, Ludlam-Raine says.
“They provide plenty of fibre, the highest protein content of the standard bran flakes, useful vitamin and mineral fortification and excellent value for money,” she explains. While “they do contain some added sugar, it’s less than many branded alternatives.”
Turtle Organic Bran Flakes
This premium product is “another excellent option thanks to its simple organic ingredients [just wholemeal wheat flour, wheat bran, corn syrup and salt] and the highest wheat bran content of those compared,” Ludlam-Raine says.
“They’re also extremely low in sugar, although they are considerably more expensive than supermarket own brands.”
M&S Only 3 Ingredients Bran Flakes
Part of M&S’s recent minimal-ingredients range, these bran flakes simply contain wholegrain wheat, barley malt extract and sea salt. “These have by far the shortest and simplest ingredients list while still providing a good amount of fibre and protein,” Ludlam-Raine says.
“Although they aren’t fortified like many rivals, they’re very low in sugar and are an excellent choice if you prefer minimally processed foods.”
FAQs
1. How many calories does a recommended bowl of bran flakes contain?
A recommended 30g serving of dry bran flakes contains approximately 100 to 130 calories.
2. Can diabetics have bran flakes?
People with diabetes can enjoy bran flakes as part of a balanced meal. Their high fibre content means they’re generally a better choice than lower-fibre cereals such as cornflakes. To help support steadier blood glucose levels, I’d recommend pairing them with milk or unsweetened yoghurt for protein and adding berries or nuts rather than sugary toppings. Portion size and the overall meal are just as important as the cereal itself.
3. Can coeliacs eat bran flakes?
Traditional bran flakes are made from wheat bran and are therefore not suitable for people with coeliac disease because they contain gluten.
