Eating Marmite increases certain neurotransmitter levels, new research finds.
Marmite is a yeast-based spread popular in the UK, that many say is disgusting.
It makes use of the sludgy leftovers from the beer-making process.
Along with being popular in the UK, its Australian cousin ‘Vegemite’ is popular there too, despite an equally horrible taste.
The key seems to be that Marmite (and Vegemite) are fortified with vitamin B12.
Ms Anika Smith, the study’s first author, said:
“These results suggest that dietary choices can affect the cortical processes of excitation and inhibition – consistent with increased levels of GABA – that are vital in maintaining a healthy brain.
As the effects of Marmite consumption took around eight weeks to wear off after participants stopped the study, this suggests that dietary changes could potentially have long-term effects on brain function.
This is a really promising first example of how dietary interventions can alter cortical processes, and a great starting point for exploring whether a more refined version of this technique could have some medical or therapeutic applications in the future.
Of course, further research is needed to confirm and investigate this, but the study is an excellent basis for this.”
Dr Daniel Baker, a study co-author, said:
“The high concentration of Vitamin B12 in Marmite is likely to be the primary factor behind results showing a significant reduction in participants’ responsiveness to visual stimuli.
Since we’ve found a connection between diet and specific brain processes involving GABA, this research paves the way for further studies looking into how diet could be used as a potential route to understanding this neurotransmitter.
Although GABA is involved in various diseases we can make no therapeutic recommendations based on these results, and individuals with a medical condition should always seek treatment from their GP.”
About the author
Psychologist, Jeremy Dean, PhD is the founder and author of PsyBlog. He holds a doctorate in psychology from University College London and two other advanced degrees in psychology.
He has been writing about scientific research on PsyBlog since 2004. He is also the author of the book “Making Habits, Breaking Habits” (Da Capo, 2013) and several ebooks:
- Accept Yourself: How to feel a profound sense of warmth and self-compassion
- The Anxiety Plan: 42 Strategies For Worry, Phobias, OCD and Panic
- Spark: 17 Steps That Will Boost Your Motivation For Anything
- Activate: How To Find Joy Again By Changing What You Do
The study was published in the Journal of Psychopharmacology (Smith et al., 2017).