In this episode of our crosscast series shared across RhAPPcast, GHAPPcast, and Dermcast, we explore the hidden costs of obesity in immune-mediated inflammatory diseases (IMIDs) and how excess adiposity drives poorer outcomes, reduced treatment response, and increased healthcare burden. Hosted by Amanda Mixon, PA-C, president of RhAPP, this discussion brings together expert APPs from rheumatology, dermatology, gastroenterology, and metabolic health to unpack the pathophysiologic link between obesity and IMID progression. Our panel breaks down how adipose tissue fuels systemic inflammation, why cytokines like TNF-α and IL-6 worsen disease activity in psoriasis, psoriatic arthritis, and IBD, and how obesity accelerates drug clearance and impacts biologic efficacy. We also examine clinical misconceptions, challenges with pharmacokinetics, and the real-world cycle of flares, surgeries, and increased healthcare utilization seen in this high-risk population. APPs will gain practical insight into addressing weight as part of comprehensive IMID care, improving patient conversations, and leveraging collaborative, cross-specialty management strategies. Stream this episode and the full series on RhAPPcast, GHAPPcast, and Dermcast, or access every installment through the RhAPP ACE 2.0 and GHAPP ACE 2.0 mobile apps for on-the-go learning. Stay tuned for our next episode, where we shift from mechanisms to action and discuss practical strategies APPs can use to improve outcomes for patients living with both obesity and IMIDs.