What happens to our bodies if we skip breakfast or eat an unbalanced one? And what are the effects of a proper breakfast? What happens to our bodies if we skip breakfast or eat an unbalanced one? And what are the effects of a proper breakfast?
"Breakfast is the most important meal of the day" — how many times have we heard this, and wondered whether it's really true. Spoiler: it is! And for more than one reason.
First of all, there's one thing to understand: our bodies don't function the same way throughout all 24 hours. There are what are known as circadian rhythms (rhythms influenced by the time of day): the same stimulus can produce different responses at different times of the day. The discipline that studies this phenomenon in relation to nutrition is called chrononutrition, and it is increasingly at the centre of scientific research. Today, even the most recent guidelines from the Associazione Italiana di Endocrinologia and the Associazione Italiana di Dietetica e Nutrizione Clinica recognise the role of meal timing as a key element for metabolic health.
In the morning, the metabolism is "switched on" and ready to work. It is the best biological window to provide the body with fuel and nutrients. Skipping it — or making poor use of it — means missing an important opportunity. It is increasingly clear that, no, when we talk about good nutrition, it is not simply a matter of hitting a target total by the end of the day.
Has it ever happened to you that, after having breakfast with a coffee and a croissant, you were already ravenously hungry by mid-morning, or found it harder to concentrate? Some people are more sensitive than others, and there are more or less demanding moments in everyone's life, but when it happens, it is usually a physiological reaction to a breakfast that doesn't provide enough support. An unbalanced breakfast — rich in simple sugars and low in protein, fibre, antioxidants and healthy fats — can cause a rapid rise in blood sugar followed by an equally rapid drop (the so-called "glycaemic spike"). That drop is what is often perceived as, for example, sudden fatigue, difficulty concentrating, or an immediate craving to eat something. A well-constructed breakfast, on the other hand, keeps blood sugar more stable for hours. And stable blood sugar means more consistent energy, greater mental clarity and fewer hunger pangs. And, when we talk about breakfast, this applies not only to the period leading up to the next meal, but to the rest of the day as well! Increasingly, the scientific literature is delivering this message: a complete breakfast (one that also contains a good amount of protein) can improve our blood sugar management throughout the entire day, even when lunch and dinner remain exactly the same.
There's more. A proper breakfast doesn't just give you energy: it also helps you manage hunger better in the hours that follow. A breakfast with a good protein content tends to increase the feeling of satiety and reduce the need to snack throughout the day, compared to those who eat a protein-poor breakfast or skip it altogether. Sometimes the hunger we identify as "emotional" is simply our body reminding us that it's not just a question of totals and sums, but also of how and when we eat.
Eating a complete breakfast really does seem to be far more than a trend and, while it is important to remember that nutrition must always be personalised and that individual variability should always be taken into account, for some people it can make a real difference in terms of a more balanced approach to the day. Because the effects of a good breakfast go well beyond managing our daily routine: they also act on the heart, muscles and athletic performance.