INS and myocardial infarction: The correlation analysis showed a negative correlation between ghrelin and FFA levels (r = −0.48 р = 0.007), ghrelin and leptin levels (r = −0.4 р = 0.003), ghrelin and insulin levels (r = −0.54 р = 0.002), and ghrelin and glucose levels (r = −0.31 р = 0.002) in MI patients.