Is their any definite view on this for type 1 like me? My brother (not diabetic) has had great results reducing his calorie intake one day and eating normally the next. It feels more achievable than a continuous diet. My plan would be to simply reduce (halve maybe) my carbs every other day and reduce my insulin appropriately. This tends to be what happens when I go on holiday (no access to bread & biscuits) and I often come back few pounds lighter. I read something about the risk of ketosis but I don't see why.