While visiting my sister, we discussed this very topic yesterday and laughed about how back in the day we'd cut cranberry juice with soda water. Even diluted, it has a massive amount of sugar. I found out the hard way years ago when I ordered a can of cranberry juice (thinking it was a healthy choice) early in a flight to the west coast and had my first hypo upon arriving in San Francisco. I was able to get to the lounge before my next flight and 1 chocolate chip cookie completely restored me. That incident alerted me to two things: 1) Cranberry juice has a boatload of sugar, 2) I had a blood sugar issue that the doctors could never find with a simple BG test. That incident started the beginning of my interest in low carb.