How are STI Test and longevity related?

STI (sexually transmitted infection) testing does not have a direct, causally proven impact on lifespan. Its indirect contribution to longevity lies in early detection and treatment of infections that, if left untreated, can lead to severe complications—such as infertility, chronic inflammation, increased cancer risk (e.g., HPV-associated carcinomas), or organ damage (e.g., syphilis). Timely therapy can prevent these long-term consequences, thereby improving healthy lifespan (healthspan). However, the evidence is indirect: no randomized trials directly link STI testing to reduced all-cause mortality. Recommendations are based on observational data and public health guidelines (e.g., CDC, RKI). Moreover, the benefit strongly depends on individual risk groups. For the general population without risk factors, the effect on longevity is marginal. Importantly, a negative STI test is not a guarantee of longevity—it is one component of prevention, not a standalone factor. Evidence is therefore classified as 'practice' (practice recommendation).