We are all different and no one diet is going to suit everyone. That is why I have included a the 5:2 approach to doing the Blood Sugar Diet. It involves cutting your calories down to 800 calories two days a week, while eating sensibly (a low carb med-style) on the other days.
It will obviously be slower than doing 800 calories a day, every day, but it is also likely to be more flexible and less challenging. You should, none-the-less, see rapid weight loss and significant improvements in your blood sugar levels. All the best with the 5:2 intermittent fasting approach to the Blood Sugar Diet.