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High TSH levels can be a symptom of several diseases, including hypothyroidism and, more uncommonly, pituitary tumors, according to WebMD. Long-term untreated hypothyroidism can cause heart disease, obesity, goiter, pain... More »

A TSH, or thyroid-stimulating hormone, level of 100 is very high, and it rests well above the normal range of 0.4 to 4.2 microunits per milliliter for healthy adults. A level of 100 even greatly surpasses expected TSH le... More »

An individual can determine if his TSH level is high by undergoing a TSH blood test, according to Healthline. Only a health care provider can order and interpret the results of a TSH test. More »

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Side effects associated with a high thyroid count, or hyperthyroidism, include behavioral transformations, systemic reactions and changes in appearance, according to WebMD. For example, people with this condition often b... More »

Causes of high thyroid-stimulating hormone, or TSH, levels include hypothyroidism, excess anti-thyroid medication and a tumor in the pituitary gland, according to LabTestsOnline. TSH is produced in the pituitary gland, a... More »

According to WebMD, high TSH (thyroid-stimulating hormone) levels indicate an underactive thyroid gland (hypothyroidism). Common symptoms include feeling weak, tired or depressed, sensitivity to cold, constipation, britt... More »

According to WebMD, normal levels of TSH, or thyroid-stimulating hormone, are between 0.4 and 4.2 microunits per milliliter for adults, between 0.7 and 6.4 for children and between 1 and 39 for newborns. Values outside t... More »

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