Actually, borderline diabetes is a somewhat misleading term. The term pre-diabetes, which is more widely used today, better describes what is happening. Pre-diabetes means that your blood glucose is higher than normal but not yet high enough to be considered diabetes.
Fat digestion also begins in the mouth with the secretion of the enzyme lingual lipase by glands under your tongue. Although this enzyme doesn't do much with the food while it's in your mouth, it does move on down with the food to your stomach, where it can start to break down about 10-30% of the food's fat content.
Although there is a gastric lipase secreted in the stomach that causes a small amount of fat digestion, and infants produce a salivary lipase, almost all of the digestion of fat takes place in the small intestine. Like protein digestion, fat digestion is achieved through the activity of both pancreatic and intestinal brush border lipases.