So what exactly is leaky gut?
It is a condition that occurs due to gaps in the membrane lining your intestinal wall.
These tiny gaps allow toxic substances that should be confined to your digestive tract to
escape into your bloodstream – hence the term leaky gut syndrome.
These toxic substances can come from numerous sources, such as Candida yeast overgrowth, undigested food particles or waste products, and they basically irritate your intestinal lining, eventually compromising its integrity and allowing a flow of toxic particles to “leak out” into your bloodstream.
The leaking particles, in turn, prompt an inflammatory reaction from your body that can
cause a wide variety of symptoms.
Most often leaky gut syndrome is associated with inflammatory bowel diseases like
Crohn’s and ulcerative colitis, or celiac disease, but even healthy people can have varying degrees of intestinal permeability. In fact, the aforementioned study involved healthy women, not those with a health condition that would normally signal a problem with leaky gut.

Your body contains about 100 trillion bacteria — more than 10 times the number of cells you have in your entire body. It’s now quite clear that the type and quantity of microorganisms in your gut interact with your body in ways that can either prevent or encourage the development of many diseases.
Virtually anything that can upset the balance of bacteria in your digestive tract can encourage damage to your intestinal lining that can lead to leaky gut. It’s a very fragile system, and it’s important to realise that your gut bacteria are very vulnerable to lifestyle and environmental factors like Sugar/Fructose, Processed Foods, Antibiotics
(including antibiotics given to livestock for food production) ,Fluoridated water,
Agricultural Chemicals and Pesticides, Grains , Wheat

How to heal the gut:
Eat a high protein diet
Drink your water goal daily
Drink green tea or coffee
Most importantly take a Probiotic

Taking a probiotic to control insulin health and manage cortisol is a strategy
for losing belly fat. There is a direct connection between belly fat gain and poor
insulin health and cortisol ” stress ” , and probiotics have been shown to have
amazing affects on all three. There’s evidence that taking a probiotic will directly
lead to belly fat loss without a person’s going on a diet. please check the link below

http://www.ncbi.nlm.nih.gov/pubmed/20216555