Truth. I'm very full after a Coke Zero.
Also true. If I drink a Coke Zero out of a bottle, the carbonation is too much and it can be painful. A fountain drink or a bottle poured over ice is much better.
Drinking your calories is bad, especially if you are getting zero nutritional value. Diet soda, on the other hand, is not an issue.
So NOT true. Air doesn't stretch a sleeve. In fact food shouldn't stretch a sleeve if the procedure is done right and the patient doesn't chronically overeat to discomfort. Even then, the "stretching" is minimal as there is so little fundus left over after surgery.
Straws have nothing to do with anything. I giggle every time I read/hear this.
For the record, I'm almost three years out, at goal weight, maintaining beautifully and sipping a Coke Zero through a straw as we speak.