My research examines how exposure to diethylhexyl phthalate (DEHP) in addition to overfeeding alters the expression of genes involved in lipid metabolism and glycolysis in zebrafish. The purpose of our study is to examine DEHP as a potential obesogen, an environmental chemical contaminant that alters normal molecular processes to promote the obese phenotype, and identify how the obese phenotype may be exacerbated in zebrafish following exposure to DEHP and overfeeding. We conducted a 24-week feeding study with zebrafish and analyzed effects on physical fitness, blood lipid mobilization, and gene expression. I am currently observing how glycolysis-related genes extracted from liver samples were differentially expressed in zebrafish following exposure to DEHP and overfeeding.