Carlin K, Carlin S
Endocrinology Dept, Brooke Army Medical Center, San Antonio, Texas 78234.
Med Hypotheses. 1993 Jan;40(1):38-43. doi: 10.1016/0306-9877(93)90194-u.
Euthyroid sick syndrome is possibly due to an increase in Triac (a T3 analogue) and/or Tetrac (a T4 analogue). Triac and/or Tetrac possibly feed back on the pituitary/hypothalamus region and cause a secondary hypothyroidism. This is possibly analogous to such diverse conditions as fetal thyroid function and black bear hibernation.