I am experiencing a lot of craving for sweets and desserts since the past 1-2 months. I am not pregnant and have never wanted to eat sweets so badly. What can be the reason for this? Is it anything serious? Query answered by Deepshikha Agarwal dietitian and sports nutritionist. You do not need to worry. Sweet cravings are not an immediate indication of any severe underlying condition. Most sugar cravings occur due to low levels of serotonin or imbalance in the blood sugar levels. Another common reason which can cause sugar cravings is low levels of zinc in the body.