HI thank you for posting your query in HCM. sugar cravings are considered abnormal if it disturb day to day life.certain medical conditions which cause sugar cravings are diabetes,low cortisol levels,low growth hormone levels, nutritional deficiencies and stress. its almost like an addiction to sugar, you have to train your mind to get rid off this problem.excessive sugar intake suppress the sex steroids and cause adverse effects on sexual and reproductive health.it causes insulin resistance leading to obesity ,diabetes.it has effect on dental and oral health. i would suggest you to go for natural fruits ,honey for sugars . you have to quit from this habit by yourself. having known about the adverse effects of it ,you should determine strongly to solve this problem. hope i have answered your question if you have further questions i will be happy to help.