Diabetes Dialogue: Nutrition, Medication, and Treatment in Obesity With Elizabeth Bauer, MD

Welcome back to Diabetes Dialogue: Technology, Therapeutics, & Real-World Perspectives!

In this episode of Diabetes Dialogue, recorded on-site at the American Association of Clinical Endocrinology (AACE) Annual Meeting 2026 in Las Vegas, Nevada, cohosts Diana Isaacs, PharmD, and Natalie Bellini, DNP, welcome Elizabeth Bauer, MD, a clinical endocrinologist and obesity specialist, to discuss key updates in obesity management presented during her “Year in Review” session at the AACE Annual Meeting. Bauer opens by highlighting AACE’s updated obesity algorithm, released in late 2024, which builds on the organization’s prior adiposity-based chronic disease framework and shifts obesity care further away from BMI-centered diagnosis toward a more comprehensive, disease-centric model. She explains the algorithm’s emphasis on anthropometric assessment, adiposity distribution, and obesity staging, noting that clinicians must move beyond weight alone to better identify obesity-related complications and personalize treatment decisions.

The discussion focuses on the algorithm’s practical value, particularly its structured staging system and medication tables that help clinicians match pharmacotherapy to obesity-related comorbidities such as diabetes, MASLD, and obstructive sleep apnea. Bauer emphasizes that treatment goals should be complication-specific—for example, modest weight loss may improve glycemia, while greater total body weight reduction is needed for meaningful improvement in MASH. She and the hosts stress that obesity management should prioritize whole-person health rather than weight alone, drawing parallels to the evolution of diabetes treatment toward complication-driven care.

The group then turns to emerging pharmacotherapies, with Bauer reviewing several phase 2 and 3 obesity trials involving newer incretin-based agents. She highlights mazdutide, a once-weekly GLP-1–based therapy studied in Chinese populations using lower BMI thresholds more reflective of Asian obesity risk, as well as combination therapies such as semaglutide plus cagrilintide, which demonstrated greater efficacy than semaglutide alone but with substantially higher gastrointestinal adverse effects. Bauer notes that while these agents show impressive weight loss potential, tolerability remains a major clinical challenge, particularly with nausea and dose escalation.

A significant portion of the conversation centers on management of GI side effects from GLP-1 receptor agonists. Bauer explains her clinical philosophy of treating obesity like any other chronic disease—avoiding the routine practice of prescribing one medication to manage side effects caused by another whenever possible. While she may prescribe small, limited quantities of ondansetron during titration, she emphasizes that persistent nausea should prompt dose adjustment or medication changes rather than indefinite antiemetic use. The hosts discuss how slower titration strategies in real-world practice often improve tolerability compared with rigid clinical trial protocols and may help optimize long-acting monthly GLP-1 agents currently in development.

The episode also reviews bariatric surgery data, including randomized trials comparing laparoscopic banding, sleeve gastrectomy, and Roux-en-Y gastric bypass. Bauer notes that both sleeve gastrectomy and Roux-en-Y demonstrated superior efficacy and fewer complications compared with lap band procedures, while long-term comparisons between sleeve and bypass showed strong outcomes for both, with Roux-en-Y numerically favoring weight loss but often without statistically significant superiority. She also discusses higher reoperation rates among patients initially undergoing sleeve gastrectomy, often due to inadequate weight loss or significant reflux requiring conversion to bypass.

The conversation concludes with an important discussion on post-bariatric surgery weight regain and the growing use of GLP-1–based therapies after surgery. Bauer challenges the misconception that surgery “cures” obesity, emphasizing that obesity remains a chronic disease driven by persistent biology, inflammation, and environmental factors even after anatomical intervention. She notes emerging evidence suggesting that GLP-1 therapies used before or after bariatric surgery may improve long-term outcomes and reduce weight regain. She closes by reinforcing the need for clinicians to approach obesity with the same chronic disease mindset applied to diabetes—recognizing that durable management requires ongoing treatment, not a one-time intervention.

Editors’ Note: Isaacs reports disclosures with Dexcom, Abbott, Lilly, Novo Nordisk, Medtronic, Insulet, and others. Bellini reports disclosures with Abbott Diabetes Care, MannKind, Povention Bio, and others. Bauer reports no relevant disclosures.

References

1. Bauer E. DSN Year in Review: Nutrition & Obesity. Presented at the American Association of Clinical Endocrinology, Las Vegas, NV. April 22-24, 2026.