CXCL8 and type 2 diabetes mellitus: Serum IL-8 concentrations were different across groups, irrespective of intervention status (p = 0.0074), with a trend towards an increase in the T2D responders group in comparison to the no T2D group (p = 0.0673), and a significantly higher concentration of serum IL-8 in the T2D non-responders group compared to the no T2D group (p = 0.0067).