What to expect:
"Expect zero weight loss in the first three weeks, which is the adjustment phase. You may even see weight gain during this period due to compensatory overeating. Weight measurement during this time is not recommended, but many people can’t resist, so don’t expect a loss. Three weeks after starting the Fast-5 program, you should see an average of a pound per week loss. That means over the course of four weeks, you should see four pounds lost, but the loss may not be evenly spread from week to week; it can be two pounds one week, none the next, then two again, and so on.
Some people see more rapid weight loss, even in the first three weeks. That’s not a problem, but may not be seen by everyone, and is less likely for someone who’s already been maintaining a low-carb diet. An early loss of several pounds early is likely to be mostly water, so if you see a large early loss, do not expect to see the same rate in later weeks.
Decrease in symptoms of inflammatory and other diseases: (This is huge - I almost forgot about the decrease in inflammation. High CRP levels should drop dramatically with this way of eating.)
Fast-5ers have reported diminished symptoms of: rheumatoid arthritis, multiple sclerosis, asthma, congestive heart failure and a reduction of insulin requirement for type 2 diabetes."
Here is the Full Summary