Why does the gut flora have a far-reaching effect on the immune system?

Why does the gut flora have a far-reaching effect on the immune system?

The gastrointestinal tract is the primary non-sterile internal system, thus forcing the immune system to fight relentlessly to prevent overgrowth of pathogens.

Why does the gut flora have a far-reaching effect on the immune system? image 1

Short answer: Industrialized & processed food harms the digestive system, therefore also the immune system.

Dietary fiber, natural oils/fats, and naturally fermented foods are critical to maintaining good health.

  • An imbalance in gut flora affects the immune system that fights relentlessly to prevent the overgrowth of pathogens. Our lifestyle and diet have a significant impact on our immune system.
  • Poor nutrition of processed and industrialized foods greatly affects the liver and kidneys. Bile fluid, which is a strong chemical base, tends to crystallize and clog the liver and gallbladder; thus, the problem only gets worse. Bile flow is critical for maintaining proper gastrointestinal function. It is oily and lubricates the walls of the intestines; it also counteracts the high acidity of the food that comes from the stomach, thereby preventing an acidic intestinal environment.


  • Common symptoms of intestinal flora imbalance:
    • Gastrointestinal gases are usually the result of a territorial "war" between the good and pathogenic bacteria.
    • Impaired immune system results in higher morbidity of fever, flu, and gastric ulcer.
    • The urine will usually be more acidic at P.H levels of 6 and below. The explanation is that parasites "thrive" in the acidic gut environment.
    • Imbalance in gut flora impairs neurotransmitters of the brain such as serotonin which is expressed in decreased alertness and cognitive ability.
    • Uncontrolled proliferation of gastrointestinal pathogens causes damage to the intestinal wall that impairs the intestinal absorption. Constipation and abdominal obesity are common phenomena that are not always attributed to the lack of balance in the gut flora.
    • The production of the neurotransmitter serotonin is mostly carried out in the intestines using good bacteria. An unbalanced intestinal flora reduces serotonin production and causes a decrease in alertness and mood.


Continue reading: About 50% of the immune system is directly affected by the digestive system.


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