A Look Into The Future: Can Rheumatoid Arthritis Be Prevented?
Rheumatoid arthritis (RA) is one of the most common autoimmune diseases, affecting roughly 0.5% to 1% of people worldwide. It happens when the immune system mistakenly attacks the lining of the joints, causing pain, swelling, stiffness, and — over time — joint damage.
A question many people ask, especially those who have RA who are worried about their children getting it, is a natural one: can RA be prevented?
The truth is that RA cannot be reliably prevented with certainty today. But this is one of the most exciting areas in rheumatology, and there is real, encouraging news. A large share of RA cases are linked to factors you can actually change, and researchers are actively testing whether we can stop the disease before it ever starts.
Why does RA develop?
RA comes from a combination of genes and environment. Some people inherit genes (the best known is a group called HLA-DRB1) that make the immune system more likely to misfire. You cannot change your genes, and having a first-degree relative with RA does raise your risk somewhat. But genes are only part of the story — and they are not destiny.
Importantly, RA does not appear overnight. Scientists now understand that the disease often brews quietly for years before the first swollen joint. During this "pre-clinical" phase, the immune system may already be producing antibodies (such as anti-CCP antibodies) that can be detected in the blood long before symptoms begin. This slow build-up is actually good news for prevention: it creates a window of time in which something might be done.
What is the best thing you can do to reduce your risk of getting RA? Don’t smoke.
If there is one clear, powerful, and changeable risk factor for RA, it is cigarette smoking. Smoking is the strongest known environmental trigger for RA, especially the more aggressive "seropositive" form of the disease.
The effect can be dramatic. In people who carry high-risk genes and already have RA-related antibodies, smoking can raise the risk of developing RA many times over compared with non-smokers. The good news is that this risk gradually falls after quitting, slowly approaching that of a non-smoker over the years that follow. If you smoke, quitting is the most impactful step you can take to protect your joints — and, of course, your heart and lungs too.
What other lifestyle factors may reduce the risk of getting RA?
Research increasingly suggests that everyday habits add up. Large studies that followed tens of thousands of people found that those with the healthiest overall lifestyles had substantially lower rates of RA. In one major study of women, adopting four or more healthy habits was estimated to potentially prevent about one-third of RA cases. Other reviews estimate that up to 40% of RA cases may be tied to potentially modifiable factors.
While no single habit is a guarantee, the factors most consistently linked to lower RA risk include the following:
Maintaining a healthy weight. Excess body weight is associated with higher RA risk, and obesity fuels body-wide inflammation.
Staying physically active. Regular leisure-time physical activity has been linked to lower risk and is broadly beneficial for joint and overall health.
Eating a Mediterranean-style diet. Diets rich in olive oil, vegetables, fruits, whole grains, legumes, and fish — and lower in red meat, processed foods, and sweets — are associated with less inflammation. This is the one dietary pattern professional guidelines conditionally recommend for people with RA.
Getting enough omega-3 fatty acids and fish. Higher intake of fish and omega-3 fats has been associated with reduced risk.
Limiting sugar-sweetened drinks. Frequent sugary sodas have been linked to higher RA risk.
Keeping alcohol modest — or avoiding it. Some studies associate low-to-moderate alcohol intake with lower RA risk, but alcohol carries its own health risks and can trigger flares in people who already have RA or gout, so this is not a reason to start drinking.
Caring for your teeth and gums. Gum disease has been repeatedly linked to RA, and good dental hygiene is a sensible, low-risk habit.
Reducing harmful inhaled exposures. Breathing in silica, certain dusts, and some occupational particles has been tied to higher risk; protective measures at work matter.
Breastfeeding when possible. Among women, breastfeeding has been associated with lower RA risk.
Keeping vitamin D levels adequate. Low vitamin D has been linked to higher risk, though the evidence here is less certain.
A key caveat: most of this evidence comes from observational studies, which can show a strong link but cannot fully prove cause and effect. Aside from stopping smoking, we do not yet have definitive proof that changing these habits will lower any one person's risk. Still, nearly all of these steps improve your health in many other ways, so there is little downside to embracing them.
Can medication prevent RA?
This is where research is moving fastest. Because RA can be brewing for years before symptoms appear, scientists have asked: if we treat high-risk people early — before the joints become inflamed — can we stop RA from ever developing?
Several clinical trials have tested this idea in people who have joint aches and RA-related antibodies but no confirmed arthritis yet. The results so far are mixed but promising:
A trial called TREAT EARLIER gave a short course of methotrexate (a standard RA medication) to people at risk. It did not prevent RA from eventually developing, but people who received it had less joint inflammation on MRI, fewer symptoms, and better function — benefits that lasted even after the medication stopped (Krijbolder et al., Lancet, 2022).
A trial of abatacept (a drug that calms the immune system) in high-risk, antibody-positive people showed a reduction in the number who developed RA over two years, along with less joint inflammation on imaging ((Cope et al., Lancet, 2024) .
Other approaches — including hydroxychloroquine, statins, and a single dose of rituximab — have shown either no clear benefit or only a temporary delay rather than true prevention.
The overall message is that we may be able to delay RA and reduce its early burden in some high-risk people, but a proven way to permanently prevent it with medication does not yet exist. These are still research treatments, not routine care, and they carry their own risks — which is exactly why they are being studied so carefully.
What does this means for you?
RA cannot be guaranteed to be prevented, but a meaningful share of cases are linked to changeable factors.
Not smoking is the clearest, most powerful step you can take.
A healthy weight, regular activity, a Mediterranean-style diet, good dental care, and limiting sugary drinks are all sensible, low-risk habits associated with lower RA risk and better overall health.
If you have a family history of RA, joint aches, or a known positive antibody test, talk to your doctor. You may benefit from evaluation by a rheumatologist, and in some cases you might be eligible for a prevention research study.
Prevention science for RA is advancing quickly. Even if we cannot promise to stop the disease, understanding your risk and acting on the factors within your control is a worthwhile investment in your joints — and your long-term health.
Listen to this podcast from the American College of Rheumatology from August 25, 2026 titled “Can We Prevent Rheumatoid Arthritis” to learn more!
https://podcasts.apple.com/us/podcast/acr-on-air/id1473160907?i=1000785735281