Recent studies show how gut health affects the brain and vice-versa. This relationship between the gut and brain is called the gut-brain axis.
As we all know that brain has specialized cells called neurons, these neurons are responsible for various biological processes in the human body. There are numerous neurons found in the human gut. One of the largest nerves in the human body called the vagus-nerve connects our brain to the gut and gut to the brain.
A study proved that how stress induces gastrointestinal problems. Also, the gut is responsible for producing short-chain fatty acids that affect the brain by reducing the urge of eating. Butyrate that is a form of short-chain fatty acids is responsible for the blood-brain barrier. Also, the gut produces amino acids and bile that affects the brain.
Like the brain, the gut also produced neurotransmitters such as serotonin and gamma-aminobutyric acid (GABA). Serotonin contributes to the feeling of happiness and GABA controls emotions like fear and anxiety.
Putting it in a nutshell, the health of the gut affects the health of the brain. Research is going on in the manufacturing of probiotics (probiotics are live edible bacteria that are taken for a healthy gut) that affects both the gut and the brain and such probiotics are called psychobiotics.