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Category: Levothyroxine-Desiccated Thyroid

Evaluating the effectiveness of combined T4 and T3 therapy or desiccated thyroid versus T4 monotherapy in hypothyroidism: a systematic review and meta-analysis

November 3, 2025
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| Levothyroxine-Desiccated Thyroid

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 […]

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Comparative Effectiveness of Levothyroxine, Desiccated Thyroid Extract, and Levothyroxine+Liothyronine in Hypothyroidism

November 3, 2025
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| Levothyroxine-Desiccated Thyroid

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 […]

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Thyroid Stimulating Hormone Stability in Patients Prescribed Synthetic or Desiccated Thyroid Products: A Retrospective Study

November 3, 2025
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| Levothyroxine-Desiccated Thyroid

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 […]

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Desiccated thyroid extract compared with levothyroxine in the treatment of hypothyroidism: a randomized, double-blind, crossover study

November 3, 2025
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| Levothyroxine-Desiccated Thyroid, Uncategorized

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 […]

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Levothyroxine and lung cancer in females: the importance of oxidative stress

November 1, 2025
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| Cancer, Levothyroxine-Desiccated Thyroid

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 […]

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Levothyroxine use and the risk of breast cancer: a nation-wide population-based case-control study

November 1, 2025
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| Cancer, Levothyroxine-Desiccated Thyroid

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 […]

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Risk of cancer in long-term levothyroxine users: Retrospective population-based study

October 30, 2025
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| Cancer, Levothyroxine-Desiccated Thyroid

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 […]

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Recent Posts

  • Evaluating the effectiveness of combined T4 and T3 therapy or desiccated thyroid versus T4 monotherapy in hypothyroidism: a systematic review and meta-analysis
  • Comparative Effectiveness of Levothyroxine, Desiccated Thyroid Extract, and Levothyroxine+Liothyronine in Hypothyroidism
  • Thyroid Stimulating Hormone Stability in Patients Prescribed Synthetic or Desiccated Thyroid Products: A Retrospective Study
  • Desiccated thyroid extract compared with levothyroxine in the treatment of hypothyroidism: a randomized, double-blind, crossover study
  • Levothyroxine and lung cancer in females: the importance of oxidative stress

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