8 Potential Side Effects Of Intermittent Fasting 

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23 July 2025

Intermittent fasting has become increasingly popular for its promises of improved health and weight control


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However, intermittent fasting is not for everyone. There are potential side effects of this type of eating style. Here's what to watch out for


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Intermittent fasting can lead to dips in blood sugar, leaving you drained, dizzy, or lacking energy throughout the day


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Prolonged fasting may cause irritability, anxiety, or mood swings due to hunger and hormone changes


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Eating large meals after fasting can upset your stomach, cause bloating, or slow down digestion


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Reduced eating windows may lead to inadequate intake of essential vitamins and minerals


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Fasting can affect melatonin levels or cause nighttime hunger, disturbing your sleep cycle


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In some cases, intermittent fasting may disrupt menstrual cycles or impact fertility in women


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Strict fasting patterns can trigger binge-eating or lead to an obsession with food and body image


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Going long hours without food can lead to dehydration or low blood sugar, triggering headaches or lightheadedness


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