Symbolically, fasting is an act of sacrifice, in which one sacrifices food and hunger to God as a mark of devotion and surrender. Fasting purifies the mind, controls passion and the senses, and checks emotions.  

But, when it comes to cancer, Fasting may reduce glucose levels in the blood, making it harder for cancers to grow. Cancer cells feed on glucose, consuming it at a much higher level than normal cells do. During fasting, one-way cells try to conserve energy is by making it easier for cell membranes to metabolize insulin.

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