Tech billionaire and biohacker Bryan Johnson has sparked another online debate after jokingly describing oral sex as a form of “longevity therapy.”
Johnson made the comment on X after a user suggested that performing oral sex on a woman could provide health benefits by exposing a man to beneficial bacteria.
The user wrote that the practice could provide a dose of Lactobacilli bacteria to support gut health.
Responding to the post, Johnson joked: “When late night snacking becomes a longevity therapy.”
The exchange quickly attracted attention online, particularly because of Johnson’s well-known focus on anti-ageing and his highly regimented approach to health and longevity.
Johnson has previously shared intimate details of his personal life and health routines on social media. In one widely discussed post, he revealed that he had performed oral sex on his partner before later sharing what appeared to be results from her vaginal microbiome test.
He said the results showed a high level of Lactobacillus crispatus, a bacterium commonly associated with a healthy vaginal environment.
Johnson has also gained attention for his strict eating schedule, reportedly avoiding food late in the day as part of his efforts to optimise sleep and longevity. His followers subsequently joked that his latest comments amounted to an unusual loophole to his late-night eating restrictions.
Doctors Urge Caution
Despite Johnson’s humorous claim, medical experts caution against interpreting oral sex as a proven method for improving gut health or extending lifespan.
While Lactobacillus species are important components of the vaginal microbiome and can play a role in maintaining a healthy vaginal environment, consuming these bacteria through oral sex is not an established or efficient method of improving the gut microbiome.
There is also currently no established evidence that oral sex functions as a longevity treatment.
Johnson’s comments therefore appear to be more of a humorous take on his strict health and longevity regimen than an evidence-based recommendation.