NatWonk – Dr Bier’s Research Reviews – Page 8

Effect of Long-term Melatonin Supplementation on Incidence of Heart Failure in Patients with Insomnia: Abstract 4371606

November 7, 2025

Comment: This is a classic “real-world evidence” abstract that generates a frightening headline—a 90% increased risk of heart failure!—but whose findings are likely the result of a fatal flaw: confounding by indication. It’s impossible to fully judge a study from a conference abstract alone, as the methodology is never described in sufficient detail so we’ll […]

Early Treatment of Acute Myocardial Infarction with Melatonin: Effects on MMP-9 and Adverse Cardiac Events

November 7, 2025

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| Cardiovascular Health, Nutritional Supplements

Comment: This study is a classic example of one that is both exciting and deeply frustrating. The exciting part: A simple, cheap intervention (melatonin) was associated with a 70% relative reduction in death or heart failure readmission after a heart attack, supported by a significant, positive change in the MMP-9 biomarker. The frustrating part: The […]

Natural desiccated thyroid for the treatment of hypothyroidism?

November 6, 2025

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| Endocrine Health, Medications - General Pharmaceuticals

Comment: Here we have another publication adding to the growing body of evidence supporting Natural Desiccated Thyroid (NDT) for the subset of patients who remain symptomatic on standard levothyroxine monotherapy. While this article is a “mini-review” and not a large-scale, rigorous RCT, it correctly highlights the crucial clinical reality: patient-reported outcomes and preferences matter. The […]

Treatment Preferences in Patients With Hypothyroidism

November 6, 2025

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| Endocrine Health, Medications - General Pharmaceuticals

Comment: This is a powerful meta-analysis that validates what we and our patients have known for decades. The data is clear: patients overwhelmingly prefer combination therapy, and the network meta-analysis highlights that desiccated thyroid extract (DTE) is the most preferred intervention of all. What’s particularly telling is the discrepancy between patient preference and the results […]

Individualized Therapy for Hypothyroidism: Is T4 Enough for Everyone?

November 6, 2025

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| Endocrine Health, Medications - General Pharmaceuticals

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 […]

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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| Endocrine Health, Medications - General Pharmaceuticals

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 […]

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

November 3, 2025

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| Endocrine Health, Medications - General Pharmaceuticals

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 […]

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

November 3, 2025

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| Endocrine Health, Medications - General Pharmaceuticals

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 […]

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

November 3, 2025

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| Endocrine Health, Medications - General Pharmaceuticals

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 […]

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

November 1, 2025

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| Cancer, Endocrine Health, Medications - General Pharmaceuticals

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 […]