Is there evidence for "bad news for the teeth"?
My dentist said sugar is only bad for the teeth if you keep it in your mouth for a long time. For example, sucking on hard candies all day is bad for the teeth. However, if you consume the sugar in few minutes, such as in a drink form or a candy bar, there is little damage.
If you're worried about teeth, rinse you mouth with water after consuming the sugar.