Long seen as one source of energy among others, fructose is today the subject of particular attention by scientists. Present in table sugar (sucrose) and high fructose corn syrup, it could have specific effects on the body, well beyond its caloric intake. A new study highlights its distinct role in mechanisms leading to metabolic disorders.
A sugar that acts differently in the body
Unlike glucose, fructose does more than just supply cells with energy. According to researchers, it acts as a real metabolic signal. In other words, it triggers specific biological processes, including fat production and storage.
This mechanism is explained by the way fructose is transformed in the body. It bypasses some key steps in regulating energy metabolism, which can lead to increased lipid production. Result: greater fat accumulation and a direct impact on weight and metabolic health.
Cascading effects on health
The consequences of this metabolic peculiarity do not stop there. The study highlights that fructose metabolism can also lead to a decline in cellular energy (ATP) and promote the production of compounds associated with metabolic dysfunction.
In the long term, these effects could contribute to the development of metabolic syndrome, a group of disorders including obesity, insulin resistance and increased risk of cardiovascular disease. These results come as rates of obesity and diabetes continue to rise globally.
A sugar also produced by the body
Another striking element: fructose does not come only from food. The body is capable of producing it itself from glucose. This discovery significantly expands the understanding of its role in metabolic diseases.
If this mechanism may have been beneficial during evolution – by helping the body store energy in times of food scarcity – it could now turn against us. In a context of food abundance, this capacity would now favor the development of chronic diseases.
This work invites us to rethink the role of sugars in our diet. Beyond calories, it is the very nature of the sugars consumed – and their biological impact – which could prove decisive for health.