What is glucose and what is its function?

Surely you have heard about blood glucose levels at some point, but… do you really know what glucose is and why it is so important? Although it is a word that appears frequently in health topics, it is rarely explained clearly what it means and what role it plays in our body.

If you have questions about this, keep reading: here we explain it in a simple way.

Glucose is a type of sugar, a simple molecule that our body uses as its main source of energy. Every time you eat foods like bread, rice, fruit, or pasta, your body converts them into glucose. This glucose travels through the bloodstream until it reaches the cells, where it is used as fuel so everything functions properly: from the heartbeat to brain function.

When we talk about blood glucose, we refer to the amount of sugar circulating in our blood at a given moment. Keeping those levels balanced is key to feeling well, having energy, and avoiding health problems.

The main function of glucose is to provide energy. Without it, the body could not carry out many of its vital functions. Here we explain in a simple way how it works:

The body's cells, especially those in the brain, use glucose to function. That is why, if glucose levels drop too low (which is called hypoglycemia), you may feel dizzy, weak, or confused.

When there is more glucose than is needed at the time, the body stores it in the form of glycogen, mainly in the liver and muscles. This reserve is used when you need an extra boost of energy, such as when exercising or if you go several hours without eating.

Glucose is not only used to provide energy. It is also involved in other important processes, such as the formation of certain compounds necessary for the proper functioning of the body.

Doctors usually measure fasting blood glucose, that is, after not having eaten for at least 8 hours. This allows them to know whether your body is regulating sugar properly. Here is a general reference for the age-based glucose level chart (these values may vary depending on each person and situation):

If levels are above these ranges, it may be a sign of prediabetes or diabetes. That is why it is so important to have regular check-ups, especially if you have a family history or risk factors.

Some frequently asked questions about glucose

What is glucose and why is it important?
It is the sugar that serves as an energy source for the body's cells. Without it, we would not be able to function properly.

What happens if my glucose is too high or too low?
If it is very high, you may be at risk of diabetes. If it is very low, you could feel dizzy, weak, or confused. In both cases, it is important to consult a health professional.

How can I keep my glucose levels stable?
By following a balanced diet rich in fiber, avoiding refined sugars, and exercising regularly.

Now that you know what glucose is, what its function is, and how it influences your health, you surely understand why it is so important to consume products like those from Baïa Food free of sugars and additives to maintain adequate blood levels. Controlling glucose is not only a matter for people with diabetes; it is a question of overall well-being and having energy every day.

If you want to learn more about how to avoid sharp rises and drops in sugar, you can read our article on how to control glucose spikes.