Researchers conducted a study to understand how many adults in the United States have been diagnosed with arthritis by a healthcare provider. They also looked at state-level information about mental health in people with arthritis. The study did not report the total number of people included in the analysis.
The main finding is that an estimated 54.4 million U.S. adults, which is 22.7% of the adult population, have been diagnosed with arthritis. The study also projects that this number will increase significantly, reaching an estimated 78.4 million adults by the year 2040.
This was an observational study, which means it describes a situation but cannot prove what is causing the increase in arthritis cases. The study did not report on any safety concerns or specific reasons for the projected rise. Readers should understand that this research highlights a public health trend to watch, but it does not provide new information on how to prevent or treat arthritis.