<qa>  What is the goal of a placebo-treated group to reduce confounding by weight lossAim 2: Quantify M1 and M2 surface and intracellular markers polarization via flow cytometry in subcutaneous adipose tissue and peripheral blood mononuclear cells after 12 weeks of liraglutide treatment, during which dietary restrictions are lifted and spontaneous weight loss, as would occur in the clinical setting, is allowed. To eliminate confounding by weight loss, a placebo-treated group will undergo matched dietary weight loss for comparison to the liraglutide group to ascertain whether changes in macrophage polarization at 12 weeks are greater in the liraglutide group. 