what is the difference between an over active and under active thyroid?
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What's the difference between hyperthyroidism and hypothyroidism? Hyperthyroidism refers to an overactive thyroid (when it produces too much thyroid hormone) and hypothyroidism refers to an underactive thyroid (when it does not produce enough).
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While a normal TSH cannot be used as a reliable indicator of global tissue thyroid effect, even a minimally elevated TSH (above 2) demonstrates that there is diminished intra-pituitary T3 level and is a clear indication (except in unique situations such as a TSH secreting tumor) that the rest of the body is suffering ...
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Women over the age of 40 are at greater risk of goiter, as are people with a family history of the condition. Hypothyroidism is the result of an underactive thyroid gland, and this causes goiter. Because the gland produces too little thyroid hormone, it is stimulated to produce more, leading to the swelling.
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Thyroid function test A high level of TSH and a low level of T4 in the blood could mean you have an underactive thyroid. If your test results show raised TSH but normal T4, you may be at risk of developing an underactive thyroid in the future.
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A TSH test is a blood test that measures this hormone. The thyroid is a small, butterfly-shaped gland located near your throat. Your thyroid makes hormones that regulate the way your body uses energy. It also plays an important role in regulating your weight, body temperature, muscle strength, and even your mood.
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Hypothyroidism causes symptoms like slowed metabolism, tiredness, and weight gain. Having an underactive thyroid can decrease or slow down your bodily functions. With hyperthyroidism, you may find yourself with more energy, as opposed to less. You may experience weight loss as opposed to weight gain.
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More patients with TSH levels <0.05 mIU/L progress to overt hyperthyroidism than those with serum TSH levels ranging from 0.05 to 0.1 mIU/L. Patients younger than 65 years of age who have subclinical hyperthyroidism have a somewhat different outcome than older patients, depending on the cause of the disease.
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An underactive thyroid (hypothyroidism) is usually treated by taking daily hormone replacement tablets called levothyroxine. Levothyroxine replaces the thyroxine hormone, which your thyroid does not make enough of. You'll initially have regular blood tests until the correct dose of levothyroxine is reached.
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A TSH test is done to find out if your thyroid gland is working the way it should. It can tell you if it's overactive (hyperthyroidism) or underactive (hypothyroidism). The test can also detect a thyroid disorder before you have any symptoms. If untreated, a thyroid disorder can cause health problems.
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These include: Graves' disease – a condition where your immune system mistakenly attacks and damages the thyroid (about 3 in every 4 people with an overactive thyroid have Graves' disease) lumps (nodules) on the thyroid – this extra thyroid tissue can produce thyroid hormones, causing your levels to be too high.
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Low TSH levels can mean your thyroid is making too much of the hormones, a condition called hyperthyroidism.
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Hypothyroidism . If your thyroid is underactive, your body may not produce enough thyroid hormone to help burn stored fat. As a result, your metabolism is slower and you will store more fat than you burn -- especially if you're not physically active. Polycystic ovary syndrome (PCOS).
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The thyroid gland becomes overrun with white blood cells and becomes scarred. This makes the gland feel firm and rubbery. The thyroid then can't make enough of the thyroid hormone. Many people with this problem have an underactive thyroid gland.
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Abnormally high TSH levels usually mean that your thyroid is underperforming. Your pituitary gland reacts to a lack of thyroid hormones by producing extra TSH to make up the difference. This is called hypothyroidism. Low TSH levels usually mean that you're producing too much thyroid hormone.
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Overview. Hypothyroidism (underactive thyroid) is a condition in which your thyroid gland doesn't produce enough of certain crucial hormones. Hypothyroidism may not cause noticeable symptoms in the early stages.
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A high level of TSH and a low level of T4 in the blood could mean you have an underactive thyroid. If your test results show raised TSH but normal T4, you may be at risk of developing an underactive thyroid in the future.
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Hypothyroidism: a condition where the thyroid gland is underactive and does not produce enough thyroid hormone. Treatment requires taking thyroid hormone pills. Subclinical Hypothyroidism: a mild form of hypothyroidism where the only abnormal hormone level is an increased TSH.