Scientists Uncover Link: How Body Fat Directly Influences Anxiety Levels!

MADRID (EUROPA PRESS).- A team of researchers from McMaster University in Canada has uncovered a molecular link between body fat and anxiety, enhancing our understanding of this complex relationship and potentially leading to new research avenues and treatments at a time when anxiety and obesity rates are escalating.

“Our findings highlight the intricate interplay between metabolism and mental health, and we hope this leads to improved outcomes for people suffering from anxiety,” said Gregory Steinberg, the study’s lead author and a professor in the Department of Medicine at McMaster.

The study, published in the journal ‘Nature Metabolism’ and supported by the Canadian Institutes of Health Research (CIHR) and Diabetes Canada, indicates that psychological stress alters both behavior and metabolism to safeguard organisms, with adrenaline playing a crucial role in this response.

Psychological stress triggers a process called lipolysis which results in fat release, simultaneously stimulating immune cells in adipose tissue to release the hormone GDF15.

Once released, this hormone communicates with the brain to induce anxiety, as demonstrated in an experiment with mice; behavioral tests assessed anxiety-like behavior and molecular analyses pinpointed the activated pathways, establishing a “clear connection” between metabolic changes in adipose tissue and anxiety.

The research also suggests that inhibiting the signaling of the GDF15-GFRAL mechanism—which is triggered when the cytokine GDF15 binds to its GFRAL receptor in the brain—could diminish acute anxiety.

“These findings open new avenues for developing novel anxiety treatments by focusing on metabolic pathways,” stated Logan Townsend, the paper’s first author and a postdoctoral researcher at McMaster.

He further explained that understanding how stress-induced changes in fat cells can influence anxiety allows for the exploration of innovative therapeutic strategies targeting these metabolic processes, potentially offering more effective and specific relief for those suffering from anxiety disorders.

“Several companies are developing GDF15 blockers for cancer treatment, so it’s possible they could also be used for anxiety,” he added.