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![bryan_johnson Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::17468569.png) Bryan Johnson [@bryan_johnson](/creator/twitter/bryan_johnson) on x 626.2K followers
Created: 2025-07-15 20:56:49 UTC

Researchers studied XX HIV-negative men (average age 31) and looked at their gut bacteria.

They grouped participants by sexual behavior:
+ insertive only
+ receptive only
+ both (versatile)

Then they ran DNA sequencing tests on their stool to identify the prevalent gut bacterial species.

X main groups emerged: X group had more Phocaeicola, the other had more Sagetella.

Men who were versatile were 6x more likely to have a gut bacteria group pattern (enterotype) dominated by Sagetella.

Even though the overall diversity of gut bacteria was similar between both groups, the way those bacteria processed nutrients was very different.

Compared to the Phocaeicola-dominated cluster, team Sagetella broke down more amino acids (protein) and less carbs and fats.

![](https://pbs.twimg.com/media/Gv7UwyUa4AAaXCb.jpg)

XXXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1945226066039332906/c:line.svg)

**Related Topics**
[dna](/topic/dna)
[bacteria](/topic/bacteria)
[bryan johnson](/topic/bryan-johnson)

[Post Link](https://x.com/bryan_johnson/status/1945226066039332906)