WeightWatchers has long been lauded as one of the most effective diet programs. But in 2023, the company pivoted from its focus on behavior modification programs to add clinical support as new prescription weight loss drugs surged in sales. Through its WeightWatchers Clinic, eligible members can receive these prescriptions in conjunction with customized behavior and nutrition programs. Dr. Spencer Nadolsky, WeightWatchers’ medical director, explains the shift and what it means for the future.