Objectives: Cancer cachexia contributes substantially to morbidity and mortality in pancreatic cancer (PC), but nationwide mortality data remain limited. We evaluated temporal trends in nutrition- and cachexia-associated mortality among U.S. PC decedents from 1999 to 2020. Methods: This nationwide study used the CDC WONDER Multiple Cause of Death database. PC deaths were identified by ICD-10 code C25; nutrition- and cachexia-associated mortality was defined by contributing-cause codes R64, E43, E44, and E46. Temporal trends were assessed using joinpoint regression. Results: Among 810,481 PC deaths, 11,830 (1.46%) had nutrition- or cachexia-related conditions recorded as contributing causes. A significant inflection occurred in 2013. Mortality decreased during 1999–2013 (APC, ?0.79%; 95% CI, ?1.28 to ?0.29; p=0.002) and increased during 2013–2020 (APC, 13.53%; 95% CI, 12.52–14.55; p<0.001). Mortality was higher among males (MRR, 1.10; 95% CI, 1.06–1.14; p<0.001), and 72.6% of deaths occurred in individuals aged ?65 years. Only 5.0% occurred in hospice facilities. Conclusion: Documented nutrition- and cachexia-associated mortality increased markedly after 2013, particularly among older adults and males. This death-certificate-based inflection is hypothesis-generating and may partly reflect changes in clinical recognition and coding practices. Keywords: Cachexia, Mortality, Pancreatic cancer, Temporal trends, United States
Corresponding Author: Galip Can Uyar