Mataix-Cols et al. (2023) compared 4,129 individuals with a diagnosis of hypochondriasis with 41 ,290 demographically matched individuals without hypochondriasis in Sweden. They found that individuals with hypochondriasis had an 84% higher risk of all-cause mortality.
References
Mataix-Cols DIsomura KSidorchuk A, et al. All-Cause and Cause-Specific Mortality Among Individuals With Hypochondriasis. JAMA Psychiatry. Published online December 13, 2023. doi:10.1001/jamapsychiatry.2023.4744