Why Fasting Can Trigger Binge Eating
For many people, fasting is associated with discipline, spirituality, and reflection. However, from a psychological and biological perspective, long periods without food can sometimes intensify patterns of overeating.
This can be particularly true for individuals who already struggle with binge eating or cycles of restriction and overeating.
Understanding why this happens can help reduce shame and self-blame.
The body’s response to restriction
When the body goes many hours without food, it activates natural survival mechanisms designed to restore energy.
Hormones that stimulate hunger begin to rise, and the brain becomes more attentive to food. This is not a failure of willpower. It is a biological response designed to protect survival.
For someone vulnerable to binge eating, this heightened hunger can make it extremely difficult to eat in a calm and balanced way once food becomes available.
The psychology of perceived scarcity
Beyond the biological response, fasting can also trigger something psychologists sometimes refer to as a scarcity mindset.
When the mind perceives that food is limited or restricted, it may begin to think about food more frequently. This heightened focus can increase cravings and make certain foods feel more urgent or difficult to resist.
Over time, this combination of biological hunger and psychological scarcity can create the familiar restrict–binge cycle.
Why shame often makes the cycle worse
Many people feel intense guilt or shame after episodes of overeating. They may promise themselves that they will eat less the next day or regain control.
Unfortunately, this often leads back to restriction, which can set the stage for the cycle to repeat.
Understanding the mechanisms behind this pattern can be an important step toward breaking it.
During Ramadan, these patterns can sometimes become more noticeable because of the long fasting hours. If you would like to explore this topic in more depth, you may find this guide helpful: Eating Disorders and Ramadan: A Compassionate Guide
Some individuals also find themselves questioning whether fasting is appropriate for them during recovery. I explore that question further here: Can You Fast During Ramadan With an Eating Disorder?
Related Reading
If you know someone who may be struggling during Ramadan, you may also find this article helpful:
Dr Beverley Marais is a psychologist specialising in the treatment of binge eating, emotional eating, and complex relationships with food.
She works with individuals who feel caught in cycles of restriction, overeating, or constant thoughts about food, helping them develop a calmer and more trusting relationship with eating.
Her work focuses on understanding the psychological patterns that drive eating difficulties, rather than relying on diets or willpower.
Dr Marais has extensive experience supporting individuals struggling with binge eating, bulimia, and emotional eating through evidence-based psychological approaches.
Learn more about her work here:
