The breakfast swap that could help children avoid a school-morning energy crash

Nutrition experts say pairing wholegrains, protein, healthy fats and fruit may help children maintain steadier energy and concentration than sugary breakfasts.

Breakfast can make a difference to how children feel and function through the school morning, but the quality of that first meal matters as much as the fact of eating it. El Diario, citing nutritionist Pablo García Gómez, says a balanced breakfast helps provide the glucose, water, fats and vitamins the brain needs for sustained concentration, rather than the quick spike and crash that can follow a sugary start to the day.

García argues that sweets, sweetened cereals, pastries and cocoa drinks are often treated as easy morning options, yet they can work against children if they are high in sugar and low in fibre. He says a rapid rise in blood sugar can trigger an exaggerated insulin response, which may be followed by a drop in glucose and a slump in mental and physical energy. The Mayo Clinic describes this as reactive hypoglycaemia, a condition in which blood sugar falls after eating, often within four hours, and advises balancing meals with higher-fibre foods while limiting sugary items, especially on an empty stomach.

That concern is not limited to obvious sweets. García also warns that refined carbohydrates, including white bread used for toast or sandwiches, can have a similar effect if they are not paired with protein, fibre and healthy fats. In his view, the aim is not to reject a sweet breakfast outright, but to build one more carefully so that it releases energy more steadily. The American Academy of Pediatrics’ HealthyChildren.org says breakfast is linked with better attention, memory and school performance, while Children’s Health also notes that children who eat a balanced breakfast tend to start the day with more stable energy and focus.

For families looking for something practical, García suggests keeping the familiar structure of a sweet breakfast while improving the ingredients. One option is milk with added protein and unsweetened cocoa, wholegrain cereal without added sugar, plus nuts and fresh fruit. Another is plain yoghurt with protein, served with wholegrain cereal and chopped fruit. The article also notes that not every child wakes up hungry, and that forcing breakfast can create unhelpful eating habits. But for children with a full school day ahead, or for those who are underweight, the choice may need to be handled more carefully and on a case-by-case basis.