Nutrition
Thyroid Stimulating Hormone (TSH)
Thyroid stimulating hormone (TSH) is the main screening signal for thyroid pace—interpret with symptoms, free hormones, and repeat labs, not one number alone.
Thyroid stimulating hormone (TSH) comes from the pituitary and tells the thyroid how much hormone to make—high TSH often signals underactive thyroid; suppressed TSH can mean overactivity or overtreatment. It is the usual screening test but not the whole story; symptoms, free T4, and sometimes antibodies matter for athletes.
One borderline value needs retest, not panic.
Common questions
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Does TSH alone diagnose thyroid disease?
No—clinicians combine TSH with free T4, symptoms, exam, and sometimes antibodies. Athletes with heavy training still need medical interpretation, not DIY ranges.
Related terms
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