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What are the thyroid levels for seniors? An age-adjusted guide

According to a study reported in the journal *Nature*, the upper limit of the normal TSH range increases significantly with age. For seniors, this means a thyroid-stimulating hormone (TSH) level that might be considered high in a younger adult may be normal for them. This is a crucial distinction when determining what are the thyroid levels for seniors, as using a standard adult reference range can lead to misdiagnosis and unnecessary treatment.