Our intestine is our second brain, it is connected to the brain through the nervous system. There is an interconnection between the brain, intestine, immune system and endocrine system (hormones). It also helps to control the way genes are expressed, epigenetics. Our intestine is colonized by 100 trillion microorganisms; bacteria, viruses and other microorganisms.
The feeling of butterflies in the stomach or having a shrunken stomach is the result of signals that the intestine sends in response to emotions or environmental stress reactions. They happen outside of our consciousness, through the SNA, autonomous nervous system.
The human intestine has 200 million neurons and produces 95% of the serotonin in the body, a brain chemical related to emotional well-being.
Up to 50% of colon cancer can be prevented through a healthy diet and a healthy lifestyle.
By feeding, we modulate the composition of our intestinal microbiota, increasing and reducing the population of the different types of bacteria, and thus affecting our health.
Prebiotics, foods rich in fibers that feed our bacteria and probiotics, foods that contain bacteria (fermented foods such as yogurt, kefir, sauerkraut, miso, ...) help maintain our intestinal health, with the benefits for our brain, immune system, hormonal system, and genes that this supposes.