PhD Candidate @ Wagner Lab | CoE "Neuronal Circuits in Health and Disease" (Lamm Lab) | Gut-brain axis signaling in humans 🦠🧠 | University of Viennahttps://bsky.app/profile/thomaskarner.bsky.socialhttps://bsky.app/profile/thomaskarner.bsky.social/post/3mk3rnwbfpk2dIn our new study at @univie.ac.at , gut microbiome composition was linked to stress reactivity. Higher microbial diversity and inferred butyrate-producing capacity were associated with stronger cortisol reactivity, which may reflect a more adaptive response. 🧠🦠 https://doi.org/10.1016/j.ynstr.2026.10080722 Apr 2026 15:08 +0000at://did:plc:dc56jvry3mc7jynmgftqnuyw/app.bsky.feed.post/3mk3rnwbfpk2dhttps://bsky.app/profile/thomaskarner.bsky.social/post/3mi5chgtjrm2xHappy to share that my first PhD paper @univie.ac.at is now out in Neurobiology of Stress! 🎉 With @isabellacwagner.bsky.social, @davidberry1.bsky.social & Paul Forbes, we investigated how the gut microbiome is linked to acute stress reactivity in humans🦠🧠 https://www.sciencedirect.com/science/article/pii/S235228952600028728 Mar 2026 18:51 +0000at://did:plc:dc56jvry3mc7jynmgftqnuyw/app.bsky.feed.post/3mi5chgtjrm2x