Mortality in Patients with Myalgic Encephalomyelitis and Chronic Fatigue Syndrome.
McManimen, Stephanie L, Devendorf, Andrew R, Brown, Abigail A et al. · Fatigue : biomedicine, health & behavior · 2016 · DOI
Quick Summary
This study examined whether people with ME/CFS die earlier than the general population. Researchers gathered information about 56 people with ME/CFS who had passed away by asking their family members and caregivers. The findings suggest that people with ME/CFS in this group died several years earlier on average than people in the broader U.S. population, particularly from heart-related causes.
Why It Matters
Understanding mortality patterns in ME/CFS is critical for patient care, clinical management, and advocating for research funding. This study addresses a significant gap in the literature and raises important questions about whether ME/CFS increases premature death risk—information that could guide clinical surveillance and preventive interventions.
Observed Findings
Mean age of all-cause death in the sample was 55.9 years compared to 73.5 years in the U.S. population
Mean age of cardiovascular-related death was 58.8 years compared to 77.7 years nationally
Mean age of suicide-related death was 41.3 years compared to 47.4 years nationally
Mean age of cancer-related death was 66.3 years compared to 71.1 years nationally
56 individuals with ME/CFS were included in the mortality analysis
Inferred Conclusions
Patients with ME/CFS in this sample face significantly elevated risk of earlier all-cause mortality and cardiovascular mortality compared to the general U.S. population
Directional trends suggest lower mean ages of death for suicide and cancer, though statistical significance requires confirmation in larger samples
The findings indicate a potential need for increased clinical attention to cardiovascular risk and mental health in ME/CFS patients
Results warrant replication in larger, more representative samples before drawing population-level conclusions
Remaining Questions
Why is cardiovascular mortality specifically elevated in people with ME/CFS, and what are the underlying physiological mechanisms?
What This Study Does Not Prove
This study does not establish that ME/CFS directly causes earlier death, as it cannot determine whether mortality differences result from the disease itself, comorbidities, reduced healthcare access, or other factors. The small sample size and over-representation of severely ill patients limit generalizability, and findings should not be assumed to represent all people with ME/CFS. The study is observational and cannot establish causal mechanisms for the observed age-of-death differences.
Tags
Phenotype:Severe
Method Flag:Weak Case DefinitionNo ControlsSmall SampleExploratory Only