Dietitian shares warning on breakfast staple you may not realise is unhealthy

Breakfast is meant to fuel your day and keep you full until lunch.

But according to dietitian Aisling Pigott, one morning habit that many people assume is healthy could actually be working against you.

Flavoured yoghurts, often seen as a quick and convenient choice, are a particular concern - packed with hidden sugars and additives that can affect both your gut and overall health.

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Yoghurt itself is a great source of protein, calcium, and probiotics, but Thomas points out that the sweetened, fruit-flavoured varieties often contain as much sugar as a can of soda. Artificial sweeteners, preservatives, and stabilisers are commonly added to enhance flavour and extend shelf life, which can interfere with digestion and even contribute to long-term metabolic issues.

The problem is compounded when these products are marketed as 'low-fat' or 'healthy,' giving a false impression of nutritional value.

Reading labels carefully is key, Pigott advises, as many flavoured yoghurts are essentially 'sugar disguised as breakfast.'

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"If sugar, corn syrup, or anything unpronounceable is at the top of the ingredients list, it’s better to skip it," she says.

Instead, she recommends opting for plain yoghurt, which delivers all the nutritional benefits without the unnecessary additives. You can always personalise it at home with fresh fruit, a drizzle of honey, or a sprinkle of cinnamon to satisfy your taste buds naturally.

Plain yoghurt, fruit and honey is a better way to get your sugar kick (FreshSplash/Getty)

Seasonal flavours like pumpkin spice in autumn or fresh berries in summer make it feel indulgent without the sugar overload.

Pigott also highlights a broader lesson about ultra-processed foods. Many packaged items, even those positioned as healthy, contain ingredients designed to make them taste better or last longer - but these can quietly undermine your health goals. By sticking to minimally processed options and adding your own natural flavours, you take control over both what you’re eating and the impact it has on your body.

Ultimately, natural, plain yoghurt can be a nutritious breakfast - but not all versions are created equal. Those convenient flavoured cups might be easy, but they often come with a hidden sugar punch. Making your own flavoured yoghurt at home is a simple, delicious way to enjoy the benefits without compromising on health.

So next time you’re tempted by a pre-flavoured 'breakfast staple,' remember Pigott's advice: plain yoghurt is your friend, sugar is your foe, and a little creativity can go a long way. Your gut - and your taste buds - will thank you.