A very low calorie diet, particularly when low carb, will change how your body makes hormones. This includes thyroid hormones and sex hormones (estrogen/progesterone). You also tend to store a lot of estrogen in your abdominal fat and fat cells can produce their own hormones. A drastic diet like IP therefore is likely to cause a hormone imbalance that may take a while to reset.
IP claims that if you loose fat fast, you will increase estrogen levels due to the release of fat-stored estrogen. I don't know whether that has a scientific base or not. But if your TOM does not get regular within a few months, you may want to check with a doctor. Do not trust the "medically supervised IP diet and their trained coaches" unless they have a MD degree. Monitor your symptoms carefully for changes.
Last edited by Lolo70; 08-09-2013 at 03:25 PM.
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