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Failure in the intestines can lead to problems with the brain.

It has long been known that consuming large amounts of salt in food leads to high pressure, and this is a risk factor for a whole complex of various health problems, including stroke and heart disease. But in recent years, studies have emerged that indicate that the link between salt intake and stroke has nothing to do with increasing pressure and the risk of heart disease. It is assumed that there is some connection between the amount of salt consumed and brain health.

More and more scientific papers point to the interrelation of the intestine and the brain, which some specialists now even call the intestine-brain axis. Violation of this connection is believed to be the cause of many different diseases, including Parkinson’s disease. Studies of the relationship of the intestine and the brain are continuing.

Five years ago, several scientific papers showed that consuming large amounts of salt leads to immune changes in the intestine, which increases the vulnerability of the brain to autoimmune diseases, in which the immune system mistakenly attacks healthy cells of the body, taking them for patients or pathogens . This suggested that communication between the intestine and the brain occurs through immune signals. A new research paper shows a different relationship. Immune signals from the intestines can weaken the blood vessels of the brain, thereby leading to a failure in cognitive processes.

The scientific work describes a previously unknown type of communication between the intestine and the brain through the immune system and indicates that excessive salt infatuation can adversely affect human health, regardless of pressure , worsening the condition of blood vessels. 
The study points to new methods of stroke prevention, which is the second leading cause of death in the world. Reducing salt intake is recommended for all people. It is believed that in order to improve the taste of food, each adult uses an average of 9 to 12 grams each day, that is about twice the amount recommended by WHO to five grams.
Scientists who studied mice found that immune responses from the intestines cause a cascade of chemical responses that reaches the vessels in the head, reduces blood flow through them, and the amount of blood entering the cortex and hippocampus, two brain regions responsible for learning and memory. This leads to a deterioration in the results of the respective tests. The deterioration of memory and learning occurs even under normal pressure. The intestine responded to excessive amounts of salt and emitted immune signals, the latter and became the cause of the violation of the brain. Despite the fact that the study affected only animals, scientists believe that similar processes occur in the human body.


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