| I think it depends what you mean. If you mean can I eat the same non healthy diet full of over refined starches and sugars as many (most?) people in the US /UK and other Western countries have adopted. I think no. It might lead to all sorts of other problems in the future , from obesity and increased insulin resistance to bowel cancer (just as for anyone diabetic or not). If you mean eating a diet with enough wholegrain and other carbs for your needs and 'covering ' it with the right amount of insulin. Why not?
If you want to eat 'unhealthily' on the odd occassion again I would think,why not? The only problem with this is that if you don't do it very often its more difficult to work out the insulin doseage. | 
