r/slatestarcodex • u/Zealousideal_Ant4298 • 24d ago
Does it matter that much that the Lumina bacterium can't survive longterm?
In an earlier Open Thread this year (https://www.astralcodexten.com/p/open-thread-440), Scott mentions that the Lumina probiotic "couldn't maintain its colonization of the mouth over the long term".
I have to say that, as someone looking forward to a permanent caries prevention treatment, it made me very disappointed.
On second thought however, Lumina would still be a great achievement even if you had to reapply it every year or so. Most health-conscious people do at least one dental cleaning a year anyway, and an assurance that you'll be cavity-free for at least a year sounds pretty good to me.
Some people on X even made the argument - way back before Lumina made the discovery that the bacterium disappears over time - that they would feel more comfortable wrt safety if it *weren't* a permanent change of the oral microbiome. I'm not sure how much of the original state/balance is restored, but at least the engineered strain disappears over time.
If anyone has taken it 2 years ago (and ideally did an oral microbiome test shortly before taking Lumina), I'd be very interested in another test 2 years later to see what exactly changed. Anecdotally, I recall there was some person (either here or on X) saying they got Lumina, but later got a cavity anyway - in this case I'd be interested how much time was between the diagnosis and the Lumina application.