Polar T3 syndrome

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Polar T3 syndrome is a condition found in polar explorers, caused by a decrease in levels of the thyroid hormone T3.[1][2] Its effects include forgetfulness, cognitive impairment and mood disturbances. It can exhibit itself in a fugue state known as the Antarctic stare.[3][4][5]

It is regarded as one of the contributory causes of winter-over syndrome.[3]

See also[edit]

Antarctica: A Year on Ice


  1. ^ Reed HL, Silverman ED, Shakir KM, Dons R, Burman KD, O'Brian JT (April 1990). "Changes in serum triiodothyronine (T3) kinetics after prolonged Antarctic residence: the polar T3 syndrome". The Journal of Clinical Endocrinology and Metabolism. 70 (4): 965–974. doi:10.1210/jcem-70-4-965. PMID 2318952.
  2. ^ Palinkas LA, Suedfeld P (January 2008). "Psychological effects of polar expeditions". Lancet. 371 (9607): 153–163. doi:10.1016/S0140-6736(07)61056-3. PMID 17655924. S2CID 9601133.
  3. ^ a b Palinkas LA, Reed HL, Do NV (1997). "Association between the Polar T3 Syndrome and the Winter-Over Syndrome in Antarctica". Antarctic Journal of the United States Review 1997. Retrieved 2011-11-04.
  4. ^ Emily Stone (November 9, 2004). "Treating the Antarctic blues".
  5. ^ "Polar T3 Disorder". Natural History Museum. 17 April 2008.