PT - JOURNAL ARTICLE AU - Hoogendoorn, E H AU - den Heijer, M AU - van Dijk, A P J AU - Hermus, A R TI - Subclinical hyperthyroidism: to treat or not to treat? AID - 10.1136/pgmj.2003.017095 DP - 2004 Jul 01 TA - Postgraduate Medical Journal PG - 394--398 VI - 80 IP - 945 4099 - http://pmj.bmj.com/content/80/945/394.short 4100 - http://pmj.bmj.com/content/80/945/394.full SO - Postgrad Med J2004 Jul 01; 80 AB - Subclinical hyperthyroidism may be defined as the presence of free thyroxine and tri-iodothyronine levels within the reference range and a reduced serum thyroid stimulating hormone (TSH) level. In this review the prevalence of low TSH in the population and health consequences of subclinical hyperthyroidism, for example, effects on heart and bone mass, are discussed. Guidelines for treatment are given, based on expert opinion.