I don't know why chocolate cravings become stronger after liver flushing, prior to a menstrual period, or in times of stress, but a lot of people do crave chocolate. It might be that chocolate contains some neurotransmitter chemicals that help relieve stress, and the body is seeking something to get rid of stress. As good as Liver Flushing can be, it is stressful on the body, especially at first when a lot of toxins are released.