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Using condoms and lubricants to reduce friction and prevent vaginal tearing
Oil-based and petroleum-derived lubricants weaken latex rapidly, markedly increasing condom breakage and therefore the risk of mucosal injury and subsequent infection, while water- and silicone-based ...
Specific ingredients in commercial lubricants have been linked repeatedly in the sexual-health and consumer reporting to increased risk of local irritation, microbiome disruption, or even cellular dam...
Laboratory work over the past two decades has repeatedly shown that certain lubricant properties and ingredients — especially high osmolality, the polymer polyquaternium‑15 (PQ‑15), and the surfactant...
Vaginal tearing during sex is uncommon for healthy, well-lubricated tissue but becomes more likely when vulvovaginal skin is thin, dry, scarred, inflamed or under unusual mechanical stress; key medica...
Larger-than-average penises can increase the risk of certain partner injuries and infection pathways in some contexts, but the evidence is mixed, context-dependent, and limited by study design; condom...