I also tried to give up caffeine, the headaches were too much and after a week of suffering, I gave in. I did cut down from a pot a day to two big mugs a day. Coffee is my daily treat, I look forward to sitting back and enjoying it at the beginning and end of my day. I don't believe it has had any impact on my loss so far and if I find that it does, I would just switch to decaf before giving it up completely. I do know it doesn't trigger cravings for me though.