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Why does fasting make me store more fat?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Fasting can cause your body to store fat because when you don't eat, it perceives that you're starving. In defense, your body increases its ability to store calories as fat, so fewer calories go further. Unfortunately, once you start eating again, your body is primed to store any excess calories as fat. This "rebound" effect of fasting, or any kind of extreme caloric restriction, is one of the many reasons why a slow, steady approach to weight loss is the most effective one for the long term. There is no fasting or severe calorie restriction in the Weight Watchers approach to weight loss.
Dr. Michael Roizen, MD
Internal Medicine
When you starve yourself for more than 12 hours, your metabolic rate actually goes down by 40 percent. Your body senses a dietary disaster and quickly goes into storage mode, rather than burning mode. That's the primary reason why deprivation diets don't work. Your body panics about going into a famine, so it slows metabolism into emergency-storing mode, rather than a steady state of burning. Breakfast eaters are on average thinner than those who skip breakfast because they keep their metabolism genes turned on, which means calories are more likely to be burned off before they can turn into fat.
YOU: On A Diet Revised Edition: The Owner's Manual for Waist Management

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YOU: On A Diet Revised Edition: The Owner's Manual for Waist Management

For the first time in our history, scientists are uncovering astounding medical evidence about dieting -- and why so many of us struggle with our weight and the size of our waists. Now researchers...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.