Читать книгу The Insulin Factor: Can’t Lose Weight? Can’t Concentrate? Can’t Resist Sugar? Could Syndrome X Be Your Problem? - Antony Haynes - Страница 48

Don’t make the mistake of thinking that if low GI is good, no GI (i.e. eating no carbs at all) is better. Whatever degree of Insulin Resistance you have, it’s made worse if you eat no carbs at all. Eating a very low carb diet for more than a couple of weeks can reduce the activity of your thyroid hormones, in particular the most active thyroid hormone, T3, or tri-iodo-thyronine. A low level of T3 can lead to fatigue, weight gain and poor circulation. What’s more, a low carb diet will also cause your blood glucose to drop and, when this happens, your brain stimulates the adrenals to raise blood glucose with cortisol, resulting in high cortisol levels. Independently of eating a low carb diet, high cortisol levels will actually reduce the thyroid hormone T3 and also increase Insulin Resistance (see chapter 9