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New study from New York University reveals that the SLIT3 protein can make brown fat more efficient in calorie burning, opening new possibilities to increase energy expenditure and assist in combating obesity.
Researchers from New York University announced in March 2026, in the journal Nature Communications, the identification of a potential “biological switch” capable of increasing the efficiency of brown fat in calorie burning.
The SLIT3 protein, according to the study, plays a crucial role in the internal organization of this adipose tissue, creating the necessary structure for it to function fully.
Unlike white fat, which stores energy, brown fat helps the body generate heat, accelerating metabolism and increasing energy expenditure.
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The discovery of SLIT3 paves the way for new strategies in combating obesity, showing that it is possible to enhance the activity of adipose tissue without relying solely on diet or exercise.
How does the SLIT3 protein work in the body?
SLIT3 does not burn calories directly, but plays an essential structural role. It ensures that brown fat receives oxygen, nutrients, and nerve signals, allowing for its maximum activation.
In the experiments conducted, the absence of the protein impaired the efficiency of the tissue, significantly reducing its capacity to burn calories.
When the structure was intact, energy metabolism was intensified, reinforcing the idea that SLIT3 acts as a biological switch for brown fat.
The importance of brown fat
Brown fat is more abundant in infants, helping to maintain body temperature, and continues to be present in adults, although in smaller amounts.
Its cells contain many mitochondria, responsible for converting energy into heat, a process directly linked to calorie burning.
In recent years, scientists have been seeking ways to safely activate this tissue as an alternative for weight control and prevention of metabolic diseases.
The discovery of SLIT3 expands these possibilities, showing that the body’s energy expenditure can be intensified regardless of food intake.
Applications for combating obesity
So far, most therapies for obesity have focused on reducing appetite or limiting caloric intake.
GLP-1-based medications, for example, act in this direction.
The new study, however, proposes a different approach: increasing the body’s efficiency in expending energy through the activation of brown fat.
With the presence of the SLIT3 protein, brown fat can operate more efficiently, promoting greater calorie burning without the need for drastic changes in diet.
This mechanism could become an innovative alternative for treating obesity and metabolic disorders in the future.
Limitations and next steps of the research
Despite the promising results, the tests were conducted in experimental models and have not yet been applied to humans. Additional studies will be necessary to assess safety and clinical efficacy.
Still, the study represents a significant advance in understanding brown fat and its role in energy metabolism.
The SLIT3 protein emerges as a potential “natural switch” that, if properly explored, could intensify calorie burning and open new pathways for innovative metabolic therapies.
With information from Olhar Digital
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