After watching a video clip from Professor Taylor, I wrote an email to the Professor who spoke on the video asking for information.
Below is part of email response with general information. Hope the information can help other members.
Please have a look at the link for more information:
Thank you for your email. All information about the diet used in our research is freely and widely available on our website:
We advise to aim for a 15-20% decrease below the starting weight.
It is all about restricting calories, by whatever means is convenient.
Very interesting on calorie count.
X-PERT book talks about carb count.
Next mission is to work on carb and calorie!
Too much fat within the liver and pancreas prevents normal insulin action and prevents normal insulin secretion.
Both defects are reversible by substantial weight loss (less than a gram of fat within the pancreas prevents insulin being made. But to lose that amount, people have to get rid of around two and a half stone of fat overall. The visceral fat itself does not do the damage, but is a good marker for increased fat within the pancreas) - using total food replacements or just adapting ordinary food stuffs to achieve the same effect.