ADIPOQ and metabolic syndrome: However, Jensen et al. [37] showed that, in a randomized, double-blind study with adults suffering from metabolic syndrome (n = 15, mean age of 53 years old), the supplementation with 4 g of cod peptides over eight weeks had an impact on the levels of high-sensitivity C-reactive protein, whereas the other parameters evaluated (e.g., fasting and postprandial levels of acylated ghrelin, and fasting levels of adiponectin, leptin) did not show any statistically significant differences.