Leaky Gut Syndrome or intestinal hyper permeability is a condition that's more common than previously thought so if you have any of the following you may want to consider leaky gut as a possibility.
Irritable Bowel Syndrome (IBS); functional GI diseases
Inflammatory bowel disease, Celiac disease
Cancer (esophagus, colorectal)
Infections (e.g. respiratory)
Acute inflammation (sepsis, SIRS, MOF)
Chronic inflammation (e.g. arthritis)
Obesity-associated metabolic diseases such as type I diabetes
This is an appropriate discussion here because this condition and other can slow progress with the LENS.