What is the cause of inflammatory disease?

What is the cause of inflammatory disease? What is the cause of intestinal inflammatory disease under the protection of the question? Answer is the cause or cause of inflammatory bowel disease. But many people believe that the cause is hereditary, because it is known that bowel infections are transmitted in the family. According to the hypothesis, the environment also plays a role in the development of Crohn’s disease, because it usually develops in people who smoke, live in Northern Europe and live in urban areas. Other researchers believe that the cause of this disease can be by pollution or a virus. Another group of researchers believes that the source of the disease is the result of the reaction of the body’s immune system to unknown antigens. According to this hypothesis, the antigen causes the immune system inappropriate against normal bowel tissues, causing chronic inflammation.