A Hidden Genetic Code in Body Fat Is Linked to Obesity Risks

Not all body fat is created equal; visceral fat, which surrounds our organs, is far more strongly linked to metabolic disease than the subcutaneous fat under our skin. Now, researchers have unveiled a hidden layer of biological control that helps explain these differences. By mapping a chemical modification on RNA called N⁶-methyladenosine (m⁶A), they have created the first epitranscriptomic atlas of human adipose tissue.

The study, which compared paired tissue samples from women, identified 339 genes with distinct m⁶A patterns between visceral and subcutaneous fat depots. These chemical marks act as regulators, influencing the lifetime of RNA molecules and thus fine-tuning gene expression. Importantly, the team also found differences between lean individuals and those with obesity. The methylation levels of certain genes were found to correlate with key clinical variables like fat distribution and glucose metabolism. This catalogue of novel targets could pave the way for new biomarkers in the fight against metabolic disease.