Americans are in chronic pain, and a comprehensive new study exploring trends in this major public health concern reveals that what has been a long-standing and under-acknowledged problem is getting substantially worse.
The findings, published in the latest issue of the journal Demography, suggest blanket increases across multiple measures, with pain rising in every adult age group, in every demographic group, and at every site of pain for which data exists. People today are experiencing more pain than individuals of the same age in earlier decades. In fact, each subsequent birth group is in greater pain than the one that came before it.
“We looked at the data from every available perspective including age, gender, race, ethnicity, education, and income, but the results were always the same: There was an increase in pain no matter how we classified the population,” says Hanna Grol-Prokopczyk, associate professor of sociology in the University at Buffalo College of Arts and Sciences, and co-author of the paper with Zachary Zimmer, professor of sociology at Mount St. Vincent University, and first author Anna Zajacova, associate professor at Western University.
“You might think that with medical advances we’d be getting healthier and experiencing less pain, but the data strongly suggest the exact opposite,” Grol-Prokopczyk says.
While some other recent research has examined trends in chronic pain, those earlier studies focused on narrower age groups, usually those over age 50. The current paper examines a more comprehensive range of adults, aged 25-84. In addition, it relies on the 2002-20018 National Health Interview Survey (NHIS)—a nationally representative data set with more than 441,000 participants—to show how pain, which was already alarmingly high at the start of the research period in 2002, increased substantially based on annual data over 16 years.
In the United States, chronic pain affects more people and has a greater economic cost than heart disease, diabetes and cancer combined, according Grol-Prokopczyk, a medical sociologist and an expert in chronic pain.
“It’s important for policymakers to understand trends in chronic pain so we can wisely and appropriately invest resources in research and treatment,” says Grol-Prokopczyk. “We hope this paper can help illustrate the issue.”
In addition to revealing trends, the paper also provides a glimpse of what might be causing the increase.
The information necessary for a detailed explanation isn’t part of the NHIS data set, but the researchers did look at a host of variables to determine which ones were most closely associated with the pain trends.
In the oldest age group (65-84), physical health conditions such as body mass index (BMI), hypertension, diabetes and kidney conditions correlate most with increases in pain. While BMI again surfaces as a correlate in young and middle-aged people, distress and alcohol use also have strong associations with chronic pain trends in these age groups.
“What we’re seeing in the younger age groups demonstrates how pain in some ways functions as much as a mental health problem as it does a physical health problem,” says Grol-Prokopczyk. “Pain can be exacerbated by stress, and stress can bring about alcohol use.”
The paper’s findings are so robust that they inspire questions about why chronic pain hasn’t previously been a larger part of the national dialogue on the country’s biggest health challenges.
Information on cancer mortality is readily available. There is plenty of research on obesity and other health concerns, but until approximately five years ago there were no national studies on general chronic pain trends, according to Grol-Prokopczyk.
“It’s likely that the opioid epidemic brought about some awareness of the importance of pain,” says Grol-Prokopczyk. “The timing of the opioid crisis’ arrival suggests that it began to open the public’s eyes to the problem.”
What’s clear is that chronic pain is having a profoundly detrimental effect on the U.S. population and demands closer monitoring by public health officials.
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