Microbiome

Your gut sends signals to your brain through the vagus nerve — and gut bacteria control what those signals say.

Your gut bacteria make butyrate from fiber — but not all fiber works the same way. Here’s what to eat, what to skip, and whether supplements are worth it.

A compound your gut bacteria make from fiber literally changes which genes your brain expresses — and the effect compounds over time.

BDNF is the protein that determines whether your brain bounces back or stays stuck. Your gut bacteria control how much you make.

Three pathways connect your gut bacteria to your brain. Understanding the system — not just one piece — is what actually changes your mental health.

Your gut bacteria produce a compound that literally changes which genes your brain expresses — and it may be the missing piece in understanding depression.

SSRIs don’t work for half of depressed patients. The reason might start in your gut, not your brain.

The immune-cytokine model of depression shows how gut inflammation sends chemical signals to your brain — and what you can do to interrupt the cycle.

The gut-brain axis isn’t a wellness trend — it’s a measurable biological pathway. Here’s what the latest studies show.

Your gut bacteria manufacture most of your body’s serotonin. Here’s how that connection works and what you can do about it.

Your microbiome doesn’t just digest food — it manufactures neurotransmitters and sends signals directly to your brain through the vagus nerve.

Your gut bacteria are quietly running your mood. Here’s the science behind the gut-brain connection and what you can do about it.