Excess fatty tissue accumulated in the neck increases the chances of suffering heart problems, according to a new study

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Researchers from the University of Granada warn that an accumulation of fatty tissue in the neck (both the double chin and the deeper deposits, located between muscles and around the cervical vertebrae) is a predictor of central and overall adiposity, cardiometabolic risk, and a pro-inflammatory profile in sedentary young adults.

Traditionally, the accumulation of visceral adipose tissue has been considered one of the factors most strongly related to cardiometabolic risk and chronic (low-grade) inflammation in humans. However, this well-established association has led researchers to neglect, to some degree, the study of other fatty deposits and their clinical/biological relevance.

“Curiously, several studies have demonstrated that the accumulation of fat in the neck (both superficial deposits such as the double chin or jowls and the deeper deposits, located between the muscles and around the cervical vertebrae) increases in direct proportion to the weight or adiposity of the individual and that it follows specific accumulation patterns, according to gender,” explains María José Arias Téllez, a researcher at the UGR and one of the main authors of this work.

In fact, a greater accumulation of fat in certain neck tissue compartments, particularly the deeper ones, is linked to a greater likelihood of cardiometabolic risk. Arias Téllez says, “However, the evidence accumulated to date has been based on experiments performed on patients with benign/malignant tumors or other chronic conditions, and it remains to be seen whether it can be generalized to relatively healthy adults.”

The ACTIBATE project

The study carried out at the UGR is part of the ACTIBATE project (Activating Brown Adipose Tissue through Exercise—seeprofith.ugr.es/actibate). The research was led by Jonatan Ruiz Ruiz and its results have been published in the International Journal of Obesity.

The study shows that the accumulation of fat in the neck—measured with computed tomography scanning—as well as its distribution in different compartments, is associated with greater overall and central adiposity, greater cardiometabolic risk, and a greater inflammatory status among healthy young adults, regardless of the amount of total and visceral fat. In addition, among the most relevant findings, the researchers observed that this accumulation of fat in the neck was as powerful a factor (in terms of direction and magnitude) as the accumulation of visceral fat in the prediction of cardiometabolic risk and inflammatory status, especially in men.

“Therefore, these results underline the need for further research in this new direction, to better understand the effect of fat accumulation in the upper part of the trunk (including the neck) and its clinical repercussions, especially in cardiometabolic risk and inflammation,” explains Francisco Miguel Acosta Manzano, one of the main authors of the research.

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