Obesity is a global epidemic, affecting millions and linked to serious health issues. But what if our understanding of its genetic roots was incomplete? A groundbreaking study has delved deep into the genetic landscape of obesity, revealing new insights that could reshape how we approach this complex condition.
Scientists have made a significant breakthrough by analyzing genetic and health data from approximately 850,000 adults across six continental ancestries: African, American, East Asian, European, Middle Eastern, and South Asian. This comprehensive approach, leveraging data from the UK Biobank and the All of Us Research Program, led to the identification of thirteen novel genes associated with obesity. The findings were published in Nature Communications.
And this is the part most people miss... While some genes like MC4R and BSN have been previously linked to obesity, this study uncovered five new players: GIGYF1, GRM7, RIF1, SLC5A3, and YLPM1. Variations in these genes can dramatically increase an individual's obesity risk, potentially by as much as three-fold!
The study's lead author, Deepro Banerjee, a graduate student at Pennsylvania State University, noted that previous research often focused on individuals of European ancestry. This bias can lead to a skewed understanding of obesity's genetic underpinnings.
“The novel genes identified in our study highlight both established and emerging pathways in obesity biology. YLPM1, for example, is an understudied transcription factor expressed in brain tissues, with links to mental disorders. It's a clear example of a gene whose lower prevalence in one population may have obscured it historically. In our cross-ancestry analysis, YLPM1 shows a remarkably consistent effect across ancestries, similar to MC4R,” Banerjee said.
Professor Santhosh Girirajan, a co-author and head of the Department of Biochemistry and Molecular Biology at Penn State, emphasized the importance of diverse data.
