IL6 and metabolic syndrome: In this context, Zhang et al. [79] found a significant decrease in serum IL-6 levels over the course of 12 weeks (with an additional significant difference in the mean change compared to the placebo group) in patients with dyslipidemia after daily supplementation of either 40, 80 or 320 mg of anthocyanins sourced from bilberry and blackcurrant [79].