PNPLA2 and chronic bronchitis: This accumulation could result from a reduction in Adipose Triglyceride Lipase (ATGL) protein levels due to hypoxia‐inducible lipid droplet‐associated protein upregulation, thereby decreasing ATGL‐mediated triglyceride hydrolysis.[66] Additionally, the Triglyceride‐Glucose index has been linked to respiratory symptoms, chronic bronchitis, and restrictive lung function impairment.[67]