Taking doxycycline after high-risk sexual encounters has significantly reduced the incidence of sexually transmitted infections (STIs), especially in places where doxy-PEP (post-exposure prophylaxis) strategy is being practiced. While this method has shown effectiveness, experts have raised concerns about its long-term impact on gut bacteriaand the potential development of antibiotic resistance. A study from UC San Francisco used metagenomic sequencing tools to assess the effect of doxy-PEP on the gut microbiome over six months.
The results revealed little impact on the overall bacterial composition, but an increase in resistance genes related to tetracycline, the antibiotic class to which doxycycline belongs, raising concerns about potential reduced effectiveness. Despite these concerns, doxy-PEP has been hailed as a significant step forward in STI prevention, particularly among…
