whether you sugar patients can eat sweets for more days

You have to tell your father not to eat more sweets and it will be so dangerous one..

I hope the main reason for taking sweets is to reduce appetite. By reducing the appetite at any cost will reduce the intake of sweets. Also the intake of sweets will no way affect the sugar patients. All they want to do is to avoid carbohydrates. I am not sure whether I am not sure on this but please confirm me on this. I was told about this that eating of more wheat will definetly add problem to the sugar patients and not reduce it