@renamalikmd: Oral sex and vaginal health myths debunked. A video claiming you should never perform oral intimacy is going viral, and as a urologist, I need to set the record straight. For most people in monogamous relationships who are STI-free, oral intimacy does not disrupt the vaginal microbiome or cause bacterial vaginosis. The only time you truly need a dental dam is if either partner has active oral or genital sores. If you're experiencing recurrent BV, a dental dam might help reduce transfer of oral bacteria, but this isn't a blanket rule for everyone. The fear-mongering around normal intimate practices isn't evidence-based, and it can harm healthy relationships. Send this to someone who needs reassurance about intimate health.