Just wanted to highlight this because Omni made a very important point. A high fasting glucose appears when someone is quite far along in insulin resistance. For a long time prior to that, a person will experience elevated insulin levels. They are making extra insulin because they've become insulin resistant, but they're not so resistant (yet) that they can't manage to still clear glucose from the blood stream. I'm actually surprised that insulin measurements aren't part of the standard bloodwork for a very overweight person.
Originally Posted by Omni
On the calorie cycling, I did that, though not as regimented a plan as you outlined, and never intentionally low carb, and I lost weight very steadily (with very little exercise) right up until my weight dropped into the normal range for my height. My low days were 1200 calories at first and later 1400 calories because I just got hungrier as I got smaller. My high days were supposed to be maintenance level for my goal weight (1800 calories), but sometimes I blew it and they were in the 2000-2500 range. I saved my high days for occasions where only having 1200 calories to spend would have been a real bummer, so they were sometimes twice a week and sometimes twice a month. This worked better for me because I didn't feel so much like I was on a diet. I felt more like I was eating like the "naturally" thin women I knew.
Now that I'm in the normal weight range for my height, I am finding that my BMR (now) is probably higher than the calculators say because I am eating at or slightly above maintenance and still very slowly losing weight. This is a complete shock to me because I was overweight/obese for nearly my entire adult life, with exactly the sort of infertility problems that women with PCOS experience. I was certain I was doomed to eat 1500 calories a day for the rest of my life. So don't despair just yet.
CW-125, part calorie counting, part transition to primal
GW- Goals are no longer weight-related