The list of causes is about as extensive as the list of symptoms and includes use of medications such as antibiotics, toxins, alcohol, stress, excessive weight, food sensitivities, lack of vitamin D, and lack of movement (exercise).
Another cause of leaky gut is poor diet. Unfortunately, the Standard American Diet, also known as SAD, really lives up to its initials. It’s the naturally occurring bacteria present in “real” food that keeps our gut healthy.
Foods that have been picked, pressed, pulverized, processed, preserved and packaged before being frozen or put in a box or bag are going to lead to an imbalanced ecology in the gut.
A growing body of research also indicates grains such as wheat might be culprits in the development of leaky gut because they contain substances that have been shown to damage the intestinal walls.