(53) studied a panel of 70 healthy adults and reported that each 10 μg/m3 increase in 3-day moving average PM2.5 was associated with a 4.19% increase in fasting insulin (95% CI: 2.35–6.05), a 5.95% increase in β-cell function (HOMA-B; 95% CI: 3.66–8.26), and a 3.77% increase in insulin resistance (HOMA-IR; 95% CI: 1.41–4.64). This evidence concerns the gene INS and Insulin resistance.