Increasing evidence shows that our digestive systems play a significant role in our overall health, both physical and mental.There is evidence of a connection between hormones, the intestinal bacteria, probiotics and mental functions. An imbalance in bowel flora may lead to depression, anxiety and mental illness.
Gut bacteria play a vital role in the immune system, chronic pain conditions, diabetes, obesity and autism. By altering dietary intake to include more vegetables, fiber and probiotics instead of high fat and carbohydrates based diets many physical and mental conditions can be improved.
Just as there are neurons in the brain, neurons are also in the gut. These neurons produce neurotransmitters like serotonin, which are also found in the brain. In fact, the greatest concentration of serotonin, which is involved in mood control, depression and aggression, is found in the intestines, not the brain.
It’s quite possible that this might be one reason why anti-depressants, which raise serotonin levels in your brain, are often ineffective in treating depression, whereas proper dietary changes can improve anxieties or depression related behavior naturally.