Arthritis and Exercise: Why Movement Is Medicine, Not the Enemy

The CDC reports that roughly 54.4 million U.S. adults have been diagnosed with arthritis, a common chronic condition. That number is projected to climb past 78 million by 2040 as life expectancy rises, activity levels fall, and waistlines expand.

Here's the part most people don't realize: the majority of adults 20 and older already have some form of arthritis. Yes, that likely includes you.

This isn't meant to frighten you about aging or the natural changes your body goes through. But too often, an arthritis diagnosis gets treated like a death sentence for a specific joint or a beloved activity, pushing people into early retirement from exercise and movement.

Let me say this clearly, now and forever: it is not.

Plenty of people live, work, and play with arthritis and never experience meaningful symptoms. Unfortunately, if you're like many of the clients I've worked with, you've probably been handed bad advice somewhere along the way. And that advice usually makes things worse, not better.

The Bad Advice That Makes Arthritis Worse

When someone is diagnosed with osteoarthritis (OA), the standard recommendation is to rest and avoid anything that causes pain or discomfort. The problem is that complete rest and inactivity tend to worsen both the pain and the progression of arthritis over the long run, not improve it.

Some research points to sitting and its negative effect on how our joints are formed and maintained. A sedentary lifestyle appears to speed up the progression of the condition rather than protect against it.

Why Arthritis and Exercise Belong Together

A large body of evidence shows that staying active and exercising regularly improves both pain and function. Every joint in your body requires movement and loading to stimulate repair. This isn't limited to the knee or hip. It spans the entire body, from your jaw all the way down to your toes.

When you understand how arthritis and exercise actually interact, the "rest it" approach starts to look backward. Movement is what feeds your joints.

What 6,000-Year-Old Skeletons Reveal About Arthritis and Exercise

Harvard biologist Ian Wallace, working in the lab of evolutionary biologist Daniel Lieberman, studied the skeletons of middle-aged and elderly people across different periods of American history, including Native American remains up to 6,000 years old. He expected that in the era before modern transportation, when walking was the main way to get around and people spent their days hunting, fighting, and farming on their feet, the rate of OA would be higher because of all the extra loading placed on their joints.

It wasn't.

Was arthritis present? Yes. But the frequency and degree of joint degeneration didn't come close to what we see today. In fact, the study found that knee osteoarthritis has doubled in prevalence since the mid-20th century, and that this surge can't be explained simply by people living longer or weighing more.

The takeaway is striking: greater activity may actually slow the development of OA rather than accelerate it. This is the heart of why arthritis and exercise should be approached as partners. The right movement, applied consistently, is one of the most protective things you can do for your joints.

If you've been told to sit still and wait it out, consider this your invitation to do the opposite, ideally with guidance that meets your body where it is.

Move Better With One-on-One Guidance

At Southeast Physical Therapy, you'll work directly with Dr. Will Duncan, one-on-one, every visit. No insurance hurdles, no being passed off to an aide. Just root-cause treatment built around getting you back to the activities you love. If arthritis has you sidelined, let's build a plan that keeps you moving.

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Wallace IJ, Worthington S, Felson DT, et al. "Knee osteoarthritis has doubled in prevalence since the mid-20th century." Proceedings of the National Academy of Sciences, 2017. https://www.pnas.org/doi/full/10.1073/pnas.1703856114