Yes, rheumatoid arthritis can directly and significantly affect your heart. People with RA have a 50% to 70% higher risk of developing heart disease compared to the general population. This isn’t just because RA patients tend to have other risk factors like inactivity or medication side effects. The same inflammatory process that attacks your joints also damages your blood vessels, heart muscle, and the protective sac around your heart.
How RA Inflammation Damages Blood Vessels
The connection between RA and heart disease comes down to chronic, body-wide inflammation. The inflammatory molecules driving joint destruction in RA don’t stay in your joints. They circulate through your bloodstream and trigger a chain reaction in your arteries that mirrors the earliest stages of heart disease.
Specifically, these inflammatory signals damage the inner lining of your blood vessels, making them more permeable. Once that lining is compromised, fats and immune cells begin infiltrating the arterial wall. White blood cells gorge on those fats, forming “foam cells” that cluster into fatty streaks, the precursors to full-blown arterial plaques. Over time, smooth muscle cells migrate into these areas, the vessel walls thicken, and fibrous tissue builds up.
What makes this especially dangerous in RA is that inflammation also disrupts your cholesterol balance. It alters HDL (the “good” cholesterol) so it loses its ability to clear cholesterol from arterial walls and reduces its antioxidant activity. Meanwhile, LDL particles become more easily oxidized, which accelerates plaque formation. The result is arterial plaques that are not only more likely to form but also more unstable and prone to rupture, which is exactly how heart attacks happen.
Pericarditis: Inflammation Around the Heart
RA can inflame the pericardium, the thin sac surrounding your heart. Pericardial involvement shows up in 30% to 50% of RA patients on imaging, though the vast majority of these cases are silent, meaning small fluid collections that cause no symptoms and are only discovered incidentally.
Fewer than 10% of RA patients develop symptomatic pericarditis. When it does cause symptoms, it typically presents as sharp chest pain that worsens when you lie down or breathe deeply. Severe complications like fluid buildup compressing the heart (cardiac tamponade) or chronic scarring that restricts heart movement are rare and limited to isolated case reports.
Heart Failure Risk in RA
RA increases the risk of both major types of heart failure. For the type where the heart muscle stiffens and can’t fill properly, RA raises risk by about 51%. For the type where the heart weakens and can’t pump effectively, the increase is around 34%. Both carry a significantly higher risk of death in RA patients: roughly double for stiffening-type heart failure and 45% higher for the weakened-pump type.
Chronic inflammation appears to drive this directly. It can cause low-grade damage to heart muscle cells over years, leading to subtle changes in heart structure and function that may go unnoticed until they’ve progressed. RA patients can also develop a condition called cardiac amyloidosis, where abnormal proteins deposit in heart tissue, though this is uncommon.
Irregular Heart Rhythms
People with RA are about 40% more likely to develop atrial fibrillation (AFib) than the general population. For RA patients under 50, that risk jumps to roughly three times higher. AFib causes the upper chambers of the heart to beat irregularly, which can feel like fluttering, racing, or skipping beats, and it increases stroke risk over time.
Inflammation appears to play a direct role here too. Studies tracking RA patients after procedures to correct AFib found that the arrhythmia was more likely to come back in those with higher levels of inflammatory markers in their blood. This suggests that controlling RA inflammation isn’t just about joint protection; it may also help keep your heart rhythm stable.
RA Medications: Some Help, Some Hurt
Not all RA treatments affect your heart the same way, and some of the most commonly used medications pull in opposite directions.
On the protective side, methotrexate and biologic therapies that block inflammatory signals are associated with roughly 28% and 30% reductions in cardiovascular events, respectively. Biologics also showed significant reductions in heart attacks, strokes, and major cardiac events in a large meta-analysis. This makes a strong case that aggressively treating RA inflammation does more than relieve joint symptoms.
Corticosteroids are more complicated. They reduce inflammation effectively, but long-term use promotes arterial plaque buildup, raises blood pressure, increases cholesterol, and decreases insulin sensitivity. Patients taking higher doses (above 7.5 mg per day of prednisone) appear to have roughly twice the heart disease risk of those not taking steroids. In a meta-analysis, corticosteroid use in RA was associated with a 47% increase in cardiovascular events overall.
NSAIDs carry their own heart risks. One early selective anti-inflammatory drug (rofecoxib) was pulled from the market after it was linked to increased heart attacks. Among currently available options, naproxen appears to carry the lowest cardiovascular risk. The remaining common NSAIDs seem to carry similar, modestly elevated risk.
Inflammation Levels Predict Heart Risk
C-reactive protein (CRP), a blood marker your doctor likely already checks to monitor RA activity, also predicts cardiovascular risk. In a study of over 1,200 RA patients with no prior heart problems, every 20 mg/L increase in CRP was associated with a 1% increase in the 10-year risk of a cardiovascular event. Notably, this association held even after accounting for disease activity scores, meaning CRP’s link to heart risk isn’t simply a reflection of how active your RA feels.
Higher CRP levels have also been linked to faster progression of subclinical atherosclerosis, the kind of silent artery damage that builds for years before causing symptoms. A separate analysis of over 44,000 RA patients found that those with CRP above 10 mg/L had a meaningfully higher risk of heart attack compared to those with levels below 1 mg/L.
What This Means for Monitoring
European rheumatology guidelines place the responsibility for cardiovascular risk screening squarely on rheumatologists, not just cardiologists or primary care doctors. The rationale is straightforward: the specialist managing your RA is best positioned to understand how your disease activity and treatment regimen interact with heart risk.
The full range of cardiac complications in RA includes pericarditis, heart muscle damage, coronary artery disease, valve problems, arrhythmias, and heart failure. Many of these develop silently. Pericardial effusions are usually symptom-free. Atherosclerosis progresses for years before a heart attack. Heart failure can begin with subtle exercise intolerance that’s easy to attribute to joint pain or deconditioning.
Keeping RA inflammation well controlled with disease-modifying therapies appears to be one of the most effective things you can do for your heart. Standard cardiovascular risk factors still matter enormously: blood pressure, cholesterol, smoking, physical activity, and weight all compound the inflammation-driven risk that RA adds. Addressing both the RA-specific and traditional risk factors together gives you the best protection against the cardiac complications this disease can cause.