Study how gut bacteria affect brain and behavior
This study looks at how gut bacteria may influence brain function and behavior, through a chemical called GABA. It may help researchers understand brain–gut links, though it is not yet a treatment trial.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are male, between 18 and 50 years old
- You are right-handed and identify as White (Caucasian)
- You grew up in the UK or another European country
- Your body mass index (BMI) is between 18.5 and 30
- You have not used antibiotics in the last 3 months
- You have not used proton pump inhibitors (acid-blocking medicines) in the last 3 months
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
Similar studies
Other trials that look related to this one.
This study looks at how changing your diet affects the gut bacteria and how that may influence brain-related signals. It may help researchers understand whether diet could support overall brain and gut health.
This trial tests whether taking a daily probiotic can improve your gut and immune health. You would take a probiotic or placebo pill every day and provide blood, urine, and stool samples at two visits.
This study looks at how what you eat and your stress level may change thinking and the bacteria in your gut. It may help researchers understand links between lifestyle, brain function, and gut health.
This trial tests whether taking probiotics can help with mild to moderate depression symptoms. It also looks at how probiotics affect brain activity.
This trial tests whether taking a daily probiotic capsule affects the gut microbiome and cognitive function in healthy adults. Over several weeks, you would take the probiotic, collect small stool samples at home, and fill out online questionnaires and simple thinking tasks.
This trial looks at whether short-chain fatty acids (substances made by gut bacteria) can reduce inflammation and improve thinking skills (executive function). You'll receive an injection that causes mild, temporary inflammation (like a bad cold) and complete cognitive tasks.
Hear when a new Healthy trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.