A bone marrow disorder is a less common, more serious cause of elevated white blood cells. Leukemia is the most frequent culprit. With this type of cancer, the bone marrow produces large numbers of defective white blood cells and releases them into the blood. Other bone marrow disorders, such as polycythemia vera, can also increase the WBC count.
Leaky gut syndrome is said to have symptoms including bloating, gas, cramps, food sensitivities, and aches and pains. But it's something of a medical mystery.
Allergy to yeast - if the levels of yeast build up in the gut then they can switch the immune system on so that one gets allergy reactions against the yeast. This can cause low grade inflammation of the gut. Low grade inflammation will result in leaky gut. Leaky upper gut causes Hypochlorhydria and all the problems that go with that. Leaky gut - an overgrowth of the yeast in the gut can cause leaky gut.