Mortality Risk Factors in Parkinson's Disease

Parkinson’s disease (PD) confers a consistently elevated risk of premature death compared with age- and sex-matched peers, despite advances in symptomatic therapy. Mortality is influenced by both disease-specific factors and comorbidities. Age at onset, rate of motor progression and development of non-motor complications such as cognitive impairment or autonomic dysfunction all correlate with survival. Falls, pneumonia and cardiovascular events rank among the leading immediate causes of death in PD, while cumulative comorbidity burden, nutritional status and systemic inflammation further modulate long-term outcomes. Clinical milestones—including recurrent falls, hallucinations, dementia and nursing-home placement—exert a cumulative impact on mortality risk. Biomarkers drawn from routine blood counts and protein assays, alongside objective motor and balance assessments, have emerged as pragmatic tools for stratifying risk. Understanding the interplay between neural degeneration, systemic vulnerability and external factors such as healthcare access is crucial for refining prognostic models and targeting interventions to prolong both life and quality of life in people with PD.

Research from Nature Portfolio

A large retrospective cohort study has clarified the relationship between PD and adverse cardiovascular outcomes. Using propensity score matching, investigators compared cardiovascular event rates and all-cause mortality in patients with PD against matched controls. Although overall rates of major adverse cardiovascular events (MACE) were similar between groups, stratification by disease severity revealed that individuals with more advanced motor signs faced higher cardiovascular risk scores. Multivariable analyses indicated that traditional risk factors, rather than PD severity per se, largely explained event rates. These findings underscore the importance of systematic cardiovascular risk factor management—such as hypertension and dyslipidaemia control—in the care of people with PD to mitigate mortality associated with comorbid vascular disease.

Mortality Risk Factors in Parkinson's Disease publication trend

The graph below shows the total number of articles in mortality risk factors in parkinson's disease across all publications each year (not limited to Nature Index journals).

Technical terms

Hazard ratio (HR): A measure of how often a particular event happens in one group compared to another over time, indicating relative risk of death.

Major adverse cardiovascular events (MACE): A composite endpoint frequently including heart attack, stroke, and cardiovascular death.

Prognostic Nutritional Index (PNI): A score derived from serum albumin concentration and lymphocyte count, reflecting nutritional and immune status.

Hoehn and Yahr scale: A clinician‐rated staging system quantifying overall motor severity in Parkinson’s disease.

Tinetti Performance Oriented Mobility Assessment (POMA): A scale evaluating balance and gait to estimate fall risk and related outcomes.

References

1. Early predictors of mortality in parkinsonism and Parkinson disease: A population-based study. Neurology (2018).
2. Co-morbidity burden in Parkinson’s disease: Comparison with controls and its influence on prognosis. Parkinsonism & Related Disorders (2016).
3. Association of inflammation/nutrition-based indicators with Parkinson’s disease and mortality. Frontiers in Nutrition (2024).
4. Cardiovascular outcomes in Parkinson’s disease patients from a retrospective cohort study. Scientific Reports (2024).
5. Parkinson’s disease clinical milestones and mortality. npj Parkinson's Disease (2022).
6. Life expectancy of parkinsonism patients in the general population. Parkinsonism & Related Disorders (2020).