Normally, disaccharides are broken down into monosaccharide by enzymes, and then absorbed into the bloodstream to nourish your body. When the intestinal cell (enterocyte) loses it's function to produce these enzymes, disaccharides are NOT broken down and become food for pathogenic bacteria, viruses, yeast and parasites. The Full GAPS Diet eliminates disaccharide carbohydrates: sucrose (table sugar), lactose (milk sugar) and maltose (sugar from digested starch - grains and starchy vegetables and some legumes) for two reasons:

Read more: GAPS - Gut and Psychology Syndrome Diet