Zahnfleischerkrankungen und Karies treffen Männer stärker – und jetzt wissen wir warum. Ein Entzündungsprotein, IL-1β, erhöht die Aktivität bei Parodontitis bei Männern und verstärkt die Krankheit, die zum Zahnverlust führt. Neue Studie untersuchte 6.200 menschliche Proben und Mausmodelle. Frühere Studien befassten sich nur mit männlichem Verhalten.

I’ve linked to the news release in the post above. In this comment, for those interested, here’s the link to the peer reviewed journal article:

https://www.pnas.org/doi/10.1073/pnas.2507092122

From the linked article:

**Gum disease and tooth decay hit men harder – and now we know why**

Scientists have discovered why males get dental disease more frequently and with greater severity than females, pinpointing the specific inflammation driving it. This could help treat gum and tooth decay in both sexes through different interventions.

Researchers at the University of North Carolina at Chapel Hill (UNC-Chapel Hill) have identified one **inflammatory protein, interleukin-1 beta (IL-1β), ramps up activity in periodontitis in males, amplifying symptoms of the disease that contributes to tooth loss** as it progresses. While we’ve known that men are disproportionately affected by this dental disease, **studies have largely focused on male behavior** – such as poorer oral hygiene or fewer dentist visits – as the reason they’re more susceptible to the condition. While poor brushing and flossing habits can lead to the onset of periodontitis, the body’s inflammation response is what worsens symptoms over time.

Analyzing **6,200 human samples** across three studies, the scientists found that men have significantly higher IL-1β levels in the fluid that’s found in the gingival crevice – a V-shaped area between gum and each tooth. This activity may make gum and bone loss more pronounced when infection occurs.

In a mouse model, the researchers found that male animals had significantly higher IL-1β secretion than female rodents, mirroring what’s seen in humans. Mice bred with inflammasome gene deletions experienced less bone loss in dental disease, and animals treated with the experimental caspase-1/4 inhibitor drug – which blocked the body’s natural IL-1β response – had a significant reduction in inflammatory cells infiltrating into tissue.

This, however, was only seen in male mice – and when the scientists removed the testes, the caspase-1/4 inhibitor was no longer effective at suppressing the inflammatory response leading to bone and gum loss. Female mice with ovaries removed showed no change, further indicating that the male reproductive system is intrinsically linked to this specific immune system behavior.

Fascinating. I’ve wondered this.

I’ve noticed a lot of men in my family, my wife’s family and my greater extended family have lost both upper canine teeth. Whether or not they had proper dental hygiene habits. Some lost them sooner then later but most of them are missing and/or have been replaced.

Am I on the right track of understanding given this information?

It’s something I’ve noticed and have always be passively curious about.