Life Expectancy in Parkinson's Disease

Although Parkinson's disease is not fatal, research suggests it may influence life expectancy. One study examined the six-year survival of nearly 140,000 Medicare beneficiaries with Parkinson's disease in the United States. During the six years, 64% of the participants with Parkinson's disease passed away.

This article discusses Parkinson's disease and how it may affect life expectancy.

Parkinson's Disease and Life Expectancy

The risk of death of those with Parkinson's was then compared to Medicare beneficiaries who did not have Parkinson's or any other common diseases, including:

• Heart disease or congestive heart failure
• Chronic obstructive pulmonary disease
• Colon, lung, or breast cancer
• Diabetes
• Stroke
• Chronic kidney disease
• Hip fracture
• Alzheimer's dementia

When controlling for variables like age, race, and gender, the six-year risk of death among people with Parkinson's was found to be nearly four times greater than those Medicare beneficiaries without the disease or other common diseases.

At the same time, the rate of death among those with Parkinson's disease was similar to those with hip fracture, Alzheimer's dementia, or a recent heart attack—although it was higher than those who had been newly diagnosed with either colorectal cancer, stroke, ischemic heart disease, or chronic obstructive pulmonary disease.

The Role of Dementia and Age

Dementia also plays an important role in survival with Parkinson's. By the end of the above study, nearly 70% of the population with Parkinson's had been diagnosed with dementia, and those with dementia had a lower survival rate as compared to those without.

This means that those with dementia were more likely to die during the six-year period than those without dementia. In addition, scientific studies have shown that increasing age is linked to an increased risk of death.

It's important to remember that how a person's Parkinson's disease manifests and progresses is variable, and a person's neurologist cannot accurately predict individual life expectancy.

The Last Year of Life in Parkinson's Disease

The study also examined nearly 45,000 hospitalizations in people with terminal Parkinson's, meaning their end-of-life period.

Of those with terminal PD, the most common reasons for being in the hospital were:

• Infection (nearly 21% of the hospitalizations)
• Heart disease (18.5%)
• Lung disease that was not from an infection (nearly 13%)

Less common causes for hospitalization were problems related to the stomach or intestines, muscles, nervous system, or endocrine system (for example, diabetes).

It is not surprising that infection was the most common hospitalization before death, as people with Parkinson's are vulnerable to developing a number of infections as a result of their disease. For example, bladder dysfunction in Parkinson's increases a person's risk of developing urinary tract infections, which can become life-threatening if not detected and treated promptly.

In addition, research suggests that aspiration pneumonia is 3.8 times more common in people with Parkinson's as compared to the general population. It has also been consistently reported to be the main cause of death in people with Parkinson's.

Aspiration pneumonia results from underlying swallowing difficulties, which leads to stomach contents being inhaled into the lungs. Immobilization and rigidity, which can impair phlegm removal, also contribute to the development of pneumonia in people with Parkinson's.

Of course, heart disease is the leading cause of death in the United States,so it's not surprising that people with Parkinson's are hospitalized for this prior to death. Interestingly, the authors of the study postulated that some healthcare providers treating people with Parkinson's may mistakingly attribute symptoms of heart or lung disease (for example, fatigue, weakness, and trouble exercising) as symptoms of Parkinson's.

Caring for Your Health With Parkinson's Disease

In addition to caring for your Parkinson's health, it is also important to care for your overall health. This means visiting your primary care physician periodically for preventive care like the annual flu shot and cancer screenings—for example, a mammogram for breast cancer screening and a colonoscopy for colon cancer screening.

A primary care physician can also evaluate for risk factors related to heart attacks and strokes, and provide counseling on exercise, smoking, alcohol use, depression, or other mental health concerns. Regular visits to your primary care physician or neurologist will also allow them to catch bacterial infections like urinary tract infections before they get serious.

A Word From Verywell

While having Parkinson's disease may impact your or your loved one's life expectancy, the good news is that quality of life (and possibly longevity) can be improved with proper care. Be sure to schedule regular follow-ups with your healthcare provider, and engage in advised therapies like physical and occupational therapy, especially early on in the disease.