Muesli Health Shock: UK Supermarket Brands May Rival Chocolate Cereals
A startling investigation by consumer champion Which? has revealed that some muesli products sold in British supermarkets may offer no greater health benefits than chocolate-based cereals. The comprehensive study analysed 86 different muesli products, uncovering concerning levels of sugar and saturated fat in numerous popular brands.
Alarming Sugar Content Discovered
Which? researchers discovered that certain muesli products contain up to 20 grams of sugar per 100-gram serving. Using the established 2004 Nutrient Profiling Model, the organisation scored each product out of 100 based on positive nutrients like fibre and protein, balanced against negative factors including sugar, saturated fat, and calorie content.
The findings present a troubling picture for health-conscious consumers. The least healthy product identified was Raw Gorilla Keto Mighty Muesli, which achieved a score of just 46 out of 100. Despite being marketed as a specialist keto product with minimal sugar content (1.5g per 100g), this muesli contains significantly higher calories than standard varieties and carries a substantial saturated fat content of 12.2g per 100g, primarily from coconut chips.
Premium Brands Underperform
Eat Natural Gluten Free Buckwheat Toasted Muesli followed closely as the second least healthy option, scoring only 50 points. This product contains 15.3g of sugar per 100g and similarly high saturated fat levels from coconut at 7.4g per 100g.
Perhaps most surprisingly, Which? found that Nestlé KitKat cereal – containing nearly a quarter sugar at 24.9g per 100g – outperformed these muesli products with a score of 56 out of 100. This comparison starkly illustrates how some supposedly healthy breakfast options may actually provide poorer nutritional value than indulgent alternatives.
Value Ranges Excel in Health Ratings
In a remarkable twist, the investigation revealed that supermarket value ranges frequently offer superior nutritional profiles. Six out of the 86 tested muesli products achieved top scores of 80 out of 100, with three originating from budget-friendly supermarket lines including Asda, Morrisons, and Sainsbury's.
These own-brand products not only scored highest for nutritional balance but also represented exceptional value for money, costing less than 10p per bowl (20p per 100g). This makes them approximately eleven times cheaper than some of the most expensive products examined in the study.
Industry Responses and Expert Commentary
Shefalee Loth, Which? Nutritionist, provided crucial context: "Muesli remains a solid option for a balanced breakfast, thanks to its combination of convenience and fibre. However, not all blends are created equal. Expensive price tags, premium branding, and wellness buzzwords don't guarantee nutritional value. In fact, the healthiest options are often the simplest and the cheapest, so it's worth reading the small print if you are worried about sugar or saturated fat."
Industry responses highlighted differing perspectives on nutritional assessment. A Mornflake spokesperson defended their product range, noting that "more than 90% of our range is HFSS compliant" and emphasising their commitment to clear labelling and gradual reformulation.
RawGorilla challenged the assessment methodology, stating: "Comparing a specialist KETO product to sugary ultra-processed cereals highlights the limits of the NPM method, a 'one-size-fits-all' mathematical model. RAWGORILLA KETO Mighty Muesli is a 100% organic whole-food product, made with activated seeds and nuts, with zero added sugar."
Waitrose similarly defended their Essential No Added Sugar muesli, explaining that "all sugars come from wholefoods including sultanas, raisins, dried apricots and dates" and that the product contains ten different plant varieties beneficial for health when consumed as part of a balanced diet.
Top and Bottom Performers Revealed
The investigation provided detailed breakdowns of both the highest and lowest scoring products:
Top Six Mueslis (Score: 80/100):
- Asda Just Essentials: 5.3g sugar; 0.8g saturated fat; 366 calories; 9g fibre; 12g protein
- H&B 15 Plant Fruit & Nut: 8.3g sugar; 1.4g saturated fat; 337 calories; 9.2g fibre; 11.5g protein
- Morrisons Savers: 5g sugar; 0.9g saturated fat; 360 calories; 8.9g fibre; 10.7g protein
- Sainsbury's Fruity: 23.1g sugar; 0.5g saturated fat; 339 calories; 7.2g fibre; 8g protein
- Sainsbury's Stamford Street Co: 4.9g sugar; 0.8g saturated fat; 353 calories; 9g fibre; 11.2g protein
- Tesco Finest Fruit Nut & Seed: 12.7g sugar; 1g saturated fat; 374 calories; 7.1g fibre; 14.7g protein
Bottom Four Mueslis:
- Waitrose Essential No Added Sugar: 19.5g sugar; 3.5g saturated fat; 387 calories; 8.9g fibre; 9.7g protein (Score: 62)
- Mornflake Classic Fruit & Nut: 18.5g sugar; 3.1g saturated fat; 379 calories; 8.4g fibre; 9.3g protein (Score: 60)
- Eat Natural Gluten-Free Buckwheat Toasted: 15.3g sugar; 7.4g saturated fat; 482 calories; 7.8g fibre; 12.3g protein (Score: 50)
- Raw Gorilla Keto Mighty Muesli: 1.5g sugar; 12.2g saturated fat; 594.7 calories; 10.2 fibre; 21.4g protein (Score: 46)
Despite these concerning findings about specific products, Which? emphasised that muesli generally remains a healthy breakfast choice when selected carefully. Core ingredients typically deliver valuable dietary fibre, and when consumed with milk or fortified plant-based alternatives, muesli can contribute significantly to daily calcium intake.
The investigation serves as a crucial reminder for consumers to look beyond marketing claims and examine nutritional labels carefully, particularly regarding sugar and saturated fat content, regardless of a product's price point or perceived health credentials.
