Overcome disease Irritable Bowel Syndrome in countries and cities developed more than living in rural areas, and this is what led some researchers to believe that environmental factors such as food is the main cause of the occurrence and spread of IBS, and accounts for scientists by saying that people who live in cities tend to eat the amount of fatty foods than what it gets people in rural areas, and there are other theories say that the inhabitants of countries that enjoy environment cleaner may fall "victim" of hygiene and management of health prevention, and as a result they become more prone to injuries later in life, and this is what drives their immune systems to respond excessively.
