Is cereal healthy? These popular cereals contain more sugar than a doughnut

Wondering is cereal healthy? These popular brands have more sugar than a doughnut

Bowl of healthy cereal with muesli and fruit on wooden chopping board, an example of what to eat for those wondering is cereal healthy
(Image credit: Getty Images)

Is cereal healthy? Despite being one of the most popular breakfast options, many people are surprised by how much sugar many popular kinds of cereal contain. 

 As one of the most popular options at the breakfast table, we often think of cereal as a healthy middle-ground pick - not quite oatmeal and not quite a pastry. And while there's nothing wrong with a serving of sugary cereal once in a while, if that's what you like, many people don't know how much sugar the most popular brands contain. 

If you're looking to improve your diet, whether you want to lose weight in a week or just stick to the recommended daily sugar intake, these are the cereals best avoided. Plus, with top tips from a dietician, we've outlined the best types of healthy cereal to replace your favorite with. 

Sugary cereals

A sugar doughnut from a popular UK supermarket chain contains an average of 6.2g of sugar per serving. While this is on the lower end of the sugar spectrum, many of these cereals also contain more sugar than a glazed Krispy Kreme - which has double this at 12.6g of sugar per serving. 

When it comes to cereal, Reema Patel, London dietitian for Dietitian Fit and Co. says that we should be looking out for sugar content as a top priority. "Aim to choose those that are lower than 5g total sugar per serving, before adding milk or additional toppings."

And be wary of those 'hidden' sugars we're often warned about. "These include syrups or honey or date syrup, agave ecetera. These are all different types of added sugars," she says. 

In order of best to worst, these are the cereals to avoid if you're looking to ditch sugar cravings and make healthier choices: 

Nestle Shreddies

(Image credit: Nestle)

1. Nestlé Shreddies

They're definitely not one of the worst, but Shreddies still have 5g of sugar and 0.29g of salt per 40g serving. This means they're just over dietician Patel's recommended sugar intake for cereal. 

Frosted Shreddies, the cereal's self-confessed sugary alternative, contain a whopping 14g of sugar, which actually works out at 11% of your daily sugar intake. So if you're going for breakfast Shreddies, be sure to opt for the original flavor over the frosted version. 

Nestle Cheerios

(Image credit: Nestle)

2. Nestlé Cheerios

These delicious crunchy O's are packed with 4 wholegrains and 5.3 grams of sugar, which just about pushes them over dietician Patel's recommended sugar content for cereal. So much like Shreddies, they're not enough on their own to have you in trouble at the dentist but they're not the best either. 

Kellogg's Krave, one of the cereals to avoid if you want to know if cereal is healthy

(Image credit: Kellogg's)

3. Kellogg's Krave

Traditionally more of a kids' cereal, but we know plenty of adults who love tucking into a bowl of Krave first thing - at 7.8g of sugar per serving. It's definitely not one for anyone looking to know how to stop eating chocolate either, as this cereal is made from wheat, oat, and rice but is full of chocolate hazelnut filling. 

Jordan's Strawberry cereal

(Image credit: Jordan's)

4. Jordan's Crunchy Crisp

Jordan's might be packed with all the benefits of strawberries - but low sugar certainly isn't one of them. Coming in at 9.3g of sugar per 45g serving, it's a lot closer to the Krispy Kreme sugar content than the regular doughnut sugar content. 

Alpen Original

(Image credit: Alpen)

5. Alpen Original Muesli

Alpen's Original Muesli is a mixture of dried fruit and wholegrain oats but it's still another classic case, much like Jordan's Country Crisp, of being a muesli with loads of added sugar. With a hefty 11g per serving, it's (surprisingly) one of the worst on the list.

They do have a 'no added sugar' alternative, but this still comes in at 7.2g of sugar per serving - which is 2.2g more than Patel's recommendation. 

Kellogg's Crunchy Nut

(Image credit: Kellogg's)

6. Kellogg's Crunchy Nut

And last, but definitely not least when it comes to sugar content, is the cereal with the highest sugar content on the list: Crunchy Nut. At 11g per serving, it's double dietician Patel's recommended intake and higher in sugar than many of the other standard cereals in the supermarket.  

What makes a cereal healthy?

If you are looking to swap your cereal for a healthy alternative, there are some cereal 'green flags' to look out for. "Aim to choose a cereal that has more than 3g fiber per suggested serving size," says Patel. "You also want to choose a whole grain cereal, which will provide more nutrients and fiber, as well as keeping your blood sugars more stable and feeling fuller for longer." 

A cereal made from wholegrains is also a good idea, she says, as these naturally provide a higher source of fiber and nutrients compared to refined grains. "These can include a higher level of vitamin B, as well as iron and folate."

Typical examples include: 

  • Porridge
  • Weetabix
  • No-added sugar muesli
  • Shredded Wheat
  • Bran flakes
  • Lizi's low sugar granola
  • Bio&Me
Grace Walsh
Health Channel Editor

Grace Walsh is woman&home's Health Channel Editor, working across the areas of fitness, nutrition, sleep, mental health, relationships, and sex. In 2024, she will be taking on her second marathon in Rome, cycling from Manchester to London (350km) for charity, and qualifying as a certified personal trainer.

A digital journalist with over six years experience as a writer and editor for UK publications, Grace has covered (almost) everything in the world of health and wellbeing with bylines in Cosmopolitan, Red, The i Paper, GoodtoKnow, and more.