The first time I tried I felt incredible (for a week), I also have insomnia and for that first week I felt energy I hadn't felt since my early teens. It was also quite freeing, I have a physical job and drive a lot for work and my bloodsugar was very stable even if the energy didn't last. The main drawback is you have to eat a lot to keep up calories, I ended up stopping after a year because I couldn't keep my weight up. Talk to your specialist team about it if you decide to try but so long as you can stomach eating tonnes of nuts and meat (though you need to be careful with the amount of nuts as one too many and you've got yourself the runs) it's worthwhile I think.