The specific aim of this study is to determine molecular pathways that differentiate metabolically healthy vs unhealthy human phenotypes, and to investigate the therapeutic potential of pro-resolving lipids. Investigators will recruit volunteers that are metabolically healthy or unhealthy that fall within three BMI ranges: lean (18.-24.9 kg/m2), overweight (25.0-29.9 kg/m2) and obese (\>30.0 kg/m2). Investigators hypothesize that metabolically healthy individuals have a superior endogenous capacity to regulate an inflammatory/resolving response.