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9 Medical Causes of a Slow Metabolism

slow metabolism

You have too much cortisol

Your metabolism is how your body turns calories into energy, so when you say you have a slow metabolism, you really mean your body is hanging onto calories, causing unwanted weight gain. But what causes this to happen? For some people, it could be too much cortisol, known as the stress hormone. Normal amounts of cortisol can help you burn fat if its working in tandem with other chemicals in your body. But if you have too much cortisollike if youre really stressed out for a long timeyour body may think youre under duress and could need extra energy, which is why it clings to calories. This also happens if you have a medical condition called Cushings Syndrome, a disorder of the adrenal glands and they release too much cortisol into the bloodstream. Increases in cortisol causes an increased availably of all fuel substrates (carbs, fats, and proteins) by mobilization of glucose, free fatty acids, and amino acids from the bodys reserves, explains Roger Adams, PhD, personal trainer, doctor of nutrition, and owner of eatrightfitness.com. While this may lead to a loss in lean tissue (muscle), it also seems to increase appetite and fat mass, which can be a dangerous combination.

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