For insurers, these rising costs translate into higher claims exposure and pressures on underwriting profitability. WTW’s survey found over half of insurers expecting elevated trends anticipate them persisting for more than three years, driven by high medical costs, pharmacy and outpatient service pressures, and structural shifts in healthcare delivery. New medical technologies, cited by 74% of insurers, remain a key driver of claims inflation, followed by declining public health systems (52%) and pharmaceutical advancements (49%).