Fasting while dreaming can be considered to represent renewal, detoxification, and spiritual cleansing in one’s life.
Most people believe that fasting in a dream signifies a desire for freedom from or indifference to temptation and earthly pleasures. The dream could be a representation of being free from desires which is considered a key to the spiritual nourishment.
Fasting in a dream also signifies that you are exerting power and control over your life. This is either because you are choosing to be disciplined in all aspects of your life and feel that this is the only way for you to get on the right path. Or because you are tired, stressed out, and feel that fasting is the best way to provide relief from these issues.