RecruitingDietary supplementImpact of Supplemental Fiber on Gut and Vascular Health Related in Obesity PhenotypesBased on prior research, the investigators are interested in whether an intervention targeting gut health (supplemental fiber for 9 weeks total) will improve vascular health in individuals with obesity. Additionally, the investigators are interested in if this response differs based on whether individuals with obesity have very few heart disease risk factors or several heart disease risk factors.