This Sexually Transmitted Infection Linked To Heart Attack, Stroke
April 17, 2026
By Dennis Thompson HealthDay ReporterFRIDAY, April 17, 2026 (HealthDay News) — Syphilis is on the rise in the United States, and with it the threat...
A new study has established a significant link between the sexually transmitted infection syphilis and a higher risk for major cardiovascular events, including heart attack and stroke. The research, published in JAMA Network Open, emerges as the United States experiences a sharp increase in syphilis cases, adding a new layer of urgency to addressing the public health challenge. The findings suggest that the long-term consequences of the infection on heart and blood vessel health may be a critical, and often overlooked, danger.
According to the study, which tracked the health of nearly 9,000 adults over a 15-year period, individuals with syphilis faced a markedly greater threat to their cardiovascular health. The data revealed that syphilis patients had a 31% higher risk of heart attack, a 53% increased risk of stroke caused by blood clots, and a 92% higher risk of a bleeding-induced stroke. Furthermore, the infection was associated with a doubled risk of aortic aneurysm, a dangerous bulge in the body's main artery that can rupture with life-threatening consequences. The increased risk was most pronounced in individuals whose infection had progressed for more than a year.
Syphilis is a bacterial infection caused by Treponema pallidum and is typically transmitted through sexual contact. If left untreated, the disease progresses through several stages, and in its late, or tertiary, stage, it has long been known to cause severe damage to the heart, brain, and other organs. This new research provides modern, large-scale evidence quantifying the specific cardiovascular dangers. The findings are particularly timely, as reported syphilis cases in the U.S. surged by more than 80% between 2018 and 2023.
Researchers believe the connection between syphilis and cardiovascular damage is driven by chronic inflammation. The infection can provoke a systemic inflammatory response throughout the body, a process known to accelerate the development of atherosclerosis, or hardening of the arteries. This inflammation can weaken blood vessel walls and contribute to the formation of clots, leading to heart attacks and strokes. Senior researchers on the study noted that these harmful effects on the cardiovascular system may persist even after the syphilis infection has been successfully treated.
Public health officials and medical professionals are urged to recognize syphilis as an independent risk factor for cardiovascular disease. The infection is curable with antibiotics, most commonly penicillin, especially when detected in its early stages. The study underscores the importance of routine screening for at-risk populations, early diagnosis, and prompt treatment. Fostering greater awareness can help prevent not only the direct complications of syphilis but also mitigate the newly highlighted, and potentially fatal, risks to heart and vascular health.
Source: usnews