Comment: This is a critical review that articulates a frustration many clinicians and patients have long experienced. It provide a strong physiological rationale for why the standard TSH-centric approach is insufficient for a significant portion of our patients. The central takeaway is the biochemical evidence: LT4 monotherapy, even when it normalizes TSH, often fails to […]
Comment: A critical takeaway from this meta-analysis is the comparable safety profile of DTE. The data indicates no significant negative impact on key outcomes such as heart rate or lipid profiles when compared to standard T4 monotherapy. Beyond its safety, a key potential benefit highlighted is its effect on reverse T3 (rT3). Treatment with DTE […]
Comment: This is yet another high-quality, randomized controlled trial that undermines the long-standing bias against Desiccated Thyroid Extract (DTE). The overall finding is clear: for the average hypothyroid patient, DTE is non-inferior—meaning equivalent—to synthetic levothyroxine (LT4) when it comes to quality of life, memory, and depressive symptoms. The most compelling takeaway (although a post hoc […]
Comment: This is a fascinating retrospective study that directly challenges a core assumption in conventional endocrinology. The prevailing dogma is that synthetic levothyroxine provides superior TSH stability, with desiccated thyroid extract (DTE) often dismissed as an inconsistent or unstable option. However, this real-world data demonstrates that for the primary clinical goal—keeping a patient’s TSH within […]
Comment: This is a well-designed, double-blind, crossover trial putting DTE and levothyroxine head-to-head. The top line findings, that the primary outcomes for the whole group weren’t different, is a great start for substantiating that at the least Natural Desiccated Thyroid is equivalent to levothyroxine. However the secondary findings, although in a sub-group population are very […]
Comment: While this ecological study is, as detailed in the appraisal, deeply flawed and certainly cannot be used to draw any causal conclusions, it raised a provocative, hypothesis-generating question. Further studies have substantiated that there are links between levothyroxine use and cancer. The proposed mechanism—oxidative stress—is biologically plausible. We know that thyroid hormones are powerful […]
Comment: While this is an observational study and cannot prove causation, the findings are nonetheless concerning, especially as it’s not the only study showing an association of levothyroxine use and cancer. A nation-wide study identifying a 24% increase in the odds of breast cancer associated with levothyroxine use (AOR 1.24) warrants serious attention from the […]
Comment: This is an important, large-scale population study, even with the weaknesses of the study design. An adjusted odds ratio of 1.50 for any cancer is a significant signal that cannot be easily dismissed, particularly given the strong associations noted for brain (AOR 1.90) and breast (AOR 1.24) cancers. While the authors rightly point out […]
Comment: The traditional thinking is that estrogen provides a protective buffer for the aging cardiovascular system. However, this meta-analysis of 33 randomized controlled trials dismantles that assumption, identifying an 86% increased risk of venous thromboembolism and a 23% increased risk of stroke. We must stop viewing these hormones through the narrow lens of symptom suppression […]
