This is the data accompanying the paper "Sex-Specific Regulation of Inflammation and Metabolic Syndrome in Obesity" (https://pubmed.ncbi.nlm.nih.gov/32460579/). Files: - 300OB_cellCounts.xlsx --> immune cell frequencies in whole blood - 300OB_circulatingMarkers.xlsx --> concentrations of circulating markers of inflammation - 300OB_cytokineProductionCapacity_IL6IL1bTNFa --> cytokine production capacity upon stimulation. Columns are named for example "C. albicans conidia_Macrophage_24h_TNF-a", starting with the stimulus used, the cell-type used, duration of stimulation and cytokine measured. - 300OB_hostCharacteristics.xlsx --> general host characteristics - 300OB_metabolicSyndrome.xlsx --> metabolic syndrome score as described in the paper Each volunteer has been an identified starting with "C" followed by three digits. If you have any questions about this data please contact Prof. Dr. Niels Riksen (Niels.Riksen@radboudumc.nl).