5:2 and Type 1 diabetes

I did it briefly a while back but I found it difficult to stick to the fasting days when I had hypos.
If your control is good and you don't hypo often then you should be alright.
If you're used to going basal testing and things then that makes it easier too.

Just a case of trial and error I think.

 

I have been doing 5:2 for a few years. I had to figure out how to adjust the insulin, but once you get that right, it is plain sailing.

On a fasting day I currently reduce my levemir evening dose to 4 from 7 units, and to 1.5 on my one exercise day of the week. My daytime levemir dose stays the same as my body is probably still working on the food from the night before and i do still eat a small cereal breakfast. I skip lunch and get my remaining 300 calories from dinner. I adjust my fast acting insulin to suit what i eat. It is the easiest day to get the balance right as i eat much less carbohydrate than normal (no low carb diet for me).