Closing that knowledge gap is where the next generation of brain health products will be won or lost. Demand for support with stress, mood and sleep continues to climb, sharpened by the push to age well and protect quality of life for longer. Plus, shoppers increasingly want to know how a product works, not simply that it might.
For formulators and brands, meeting these demands starts with the science. The gut-brain axis is a two-way communication network linking the gut microbiome and the brain through neural, immune and hormonal pathways. Via the vagus nerve, the gut and brain exchange signals.
Understanding the gut-brain connection
In the gut, beneficial bacteria such as bifidobacteria produce metabolites, including short-chain fatty acids (SCFAs), and influence the production of neurotransmitters such as gamma-aminobutyric acid (GABA) and serotonin, around 90% of which originates in the gut. The microbiome also helps maintain the integrity of the gut barrier and modulates immune signalling, including the inflammatory processes that can affect the brain. And through the hypothalamic-pituitary-adrenal (HPA) axis, it is connected to the body's central stress response system.
In other words, nourish the right bacteria and there is potential to influence several brain-related pathways at once. This is precisely where a targeted, well-evidenced prebiotic comes into its own.
Learn more about the gut-brain connection
Turning gut–brain science into product opportunities
Bimuno® GOS, our galactooligosaccharide ingredient developed by Clasado Biosciences, is the most extensively studied prebiotic of its type, supported by more than 135 scientific publications, including over 25 clinical studies. For example, in healthy adults, three weeks of daily supplementation lowered the waking response of the stress hormone cortisol and increased attention towards positive rather than negative information, compared with placebo. In adults with irritable bowel syndrome, Bimuno GOS reduced anxiety and improved quality of life compared with placebo.
The evidence extends beyond the clinic, too. A large-scale real-world evidence (RWE) study, published in collaboration with the Primary Care Society for Gastroenterology (PCSG), captured the experiences of more than 1,100 Bimuno GOS users and found meaningful improvements not only in digestive symptoms, but also in sleep quality. Given how closely sleep is tied to mood, cognition and healthy ageing, that is a significant outcome for brands looking to address wellbeing as a whole.
Together, these findings highlight the potential of Bimuno GOS in gut–brain health, spanning stress response, emotional wellbeing and cognitive function.
Key to unlocking this potential is its versatility for formulators. Bimuno GOS works at a low effective dose, has a neutral taste and remains stable across a broad range of pH and temperature conditions. That makes it a natural fit for stress and mood supplements, sleep blends, and cognitive support formulations.
With rising consumer interest, the gut-brain axis is fast becoming one of the most exciting frontiers in microbiome science. Product developers have a valuable window to develop brain health products rooted in the microbiome, backed by evidence that supports stress and sleep positioning with confidence.
Explore the scientific evidence behind Bimuno GOS and discover its potential for gut-brain health innovation. Learn more
