Obesity Pillars roundtable: Excessive weight reduction with highly effective anti-obesity medications (heAOMs).

Background: Historically, many anti-obesity medications (AOMs) were withdrawn from development and/or the market due to safety concerns. Another challenge was that, with some exceptions, most of these AOMs had limited weight reducing efficacy. Approved AOMs often did not meet the weight reduction expectations of either clinicians, or their patients. Currently, newer approved and investigational AOMs achieve greater weight reduction than older AOMs. This has prompted an emerging new challenge of "too much weight loss" with some of these highly effective anti-obesity medications (heAOM) - something many did not think possible prior to year 2020.

Methods: This roundtable review includes perspectives from 3 obesity specialists with experience in the clinical use of AOMs. The intent is to provide perspectives and guidance in managing patients with obesity who experience "too much weight loss" with heAOM.

Results: The panelists generally agreed that before treatment with heAOMs, patients with obesity are best informed about the importance of healthful nutrition, adequate hydration, routine physical activity, behavior modification techniques, goals of treatment, and anticipated changes not only from a medical standpoint, but also from a psychosocial standpoint. Clinicians might best recognize that the definition of "excessive weight reduction" may have both objective and subjective considerations, with body composition analyses often essential to accurately assess adiposity.

Conclusions: The consensus of the panelists is reflected in a proposed structured and algorithmic approach to the patient with excessive weight reduction. Once properly evaluated, if the excessive weight reduction is determined most likely due to the heAOM hyper-responders, then this should prompt the clinician to educate the patient (and possibly family and friends) on the health and psychosocial aspects of weight reduction, and engage in a shared decision-making process that determines if the heAOM is best kept at the same dose, decreased in dose, temporarily held, or rare cases, best discontinued.