You're starving yourself.
Have you started a new extreme diet recently? Sugar is an addictive substance and when you deprive yourself of important nutrients you need, your body seeks out a quick energy hit that it knows it’ll get from the sweet stuff. That’s why when you’re not eating enough calories, you’re more likely to succumb to cravings and binge on something sweet or junk food—not a bag of raw carrots. According to one study, when rats were food-deprived daily for 12 hours, then were given 12-hour access to a sugar solution and chow, they learned to drink the sugar solution copiously, especially when it first became available each day. After a month on this intermittent-feeding schedule, the rats showed behavior similar to that of drug abusers. Simply put, when you’re on an unbalanced diet or not eating enough, your brain will push you to seek out “energy” as soon as it can to survive—likely in the form of sugary foods or drinks. Eating a balanced diet can help control sugar cravings and prevent you from overeating later.