Medical Science has been dancing around this issue for years. Lorraine at Scottish Thyroid Petition posted this link to a current review of the subject. PR
The abstract at PubMed.
The abstract at the journal site.
The link between low thyroid hormone (TH) function and heart failure (HF) is reviewed. The idea that TH dysfunction may contribute to diseases leading to HF has been discussed for over 60 years. A growing body of evidence from animal and human studies, particularly in recent years, suggests that TH treatment may improve clinical outcomes. Indeed, if a similar amount of positive information were available for a newly developed heart drug, there is little doubt that large scale clinical trials would be underway with considerable excitement. THs offer the promise of improving ventricular contraction and relaxation, improving coronary blood flow, inhibiting atherosclerosis, and new results suggest they may even reduce the incidence of arrhythmias in heart diseases. Are the potential clinical benefits worth the risk of possible overdosing? After so many years, why has this question not been answered? Clearly, the concept has not been disproven. This review will explore the body of clinical evidence related to TH dysfunction and HF, discuss insight into pathophysiologic, cellular, and molecular mechanisms provided by animal research, and discuss what is needed to resolve this long-standing issue in cardiology and move forward."
Copyright © 2014, American Journal of Physiology - Heart and Circulatory Physiology.