The brain and gut are linked by our central nervous system (CNS) which polices the molecules in our blood stream and allows certain permitted substances (such as oxygen, hormones and specific chemical messengers) to enter the brain. It also prohibits unwanted and potentially damaging particles from crossing the brain barrier - including viruses, toxins and damaging chemicals.
The aptly named Blood Brain Barrier is formed of a single layer of cells. The integrity of this layer can be disrupted by various influences including:
Signs & symptoms of leaky brain?
For information about how you can support your gut and your brain see my next blog post... How to support the brain barrier.