Hi Abby welcome to the forum
I anwser your second question first..
If you daughter and her boyfriend were to have a child, then the child would have around 1-17 chance of being diabetic.. Here some more information concerning predisposition to diabetes both T1 and T2
http://www.diabetes.org/diabetes-basics ... etes.html..
My husband is also a T1 diabetic, he's son from his first marraige isn't diabetic..
According to the statistics, my own son (my children are from my first marraige) he has 1-25 chance of being T1 as I am a T1, my oldest daughter I'm not sure of her risks as I wasn't diagnosed with diabetes until I was having my son.. My youngest daughter however has 1-100 change.. They are all adults now 20-25 and none are diaebetic..
Your second quesion,
Yes as a T1 diabetic we can eat normal foods, But within reason as the higher the carbohydrate intake is at any one time, the harder it is to match your insulin to cover the carbohydrates you eaten and maintain good control of your blood glucose..
You will find most T1 diabetics who have good control do actually eat what most will percieve as a restricted carbohyrate diet.. As in my case the DRA (daily reccomended amount) of carbs for females is 210g of carbs per day, but I only eat between 60-120g a day, but you will find that I do have the advantage of being a small eater...
So it really does depend on his control if he's got really good control it's fine, but if he's got bad control then he would be a bit silly to continue along this path..