Ok. I never use milk or sugar. I o oh use a bit of heavy cream. The first ti.e I sent on this diet 17 ears ago I read Dr atkins new diet revolution and it said that caffwi e can cause you insulin to become u stable. First time I did the diet I lost 75 lbs and eliminated caffeine. Everytime I tried the diet after that I drank regular coffee and didn't have success. I recently picked up the book and totally forgot about the no caffeine part so I was wondering what everyone else was doing.