L. Friberg, S et al. [47]prospectively revealed that patients with angina had lower T3 levels, smallerinfarctions, and higher levels of C-reactive protein and interleukin 6 (IL-6).The low T3 syndrome might be a beneficial and physiological adaptation to earlystress response of the ACS [48, 49]. Here, IL6 is linked to angina pectoris.