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Updated: Sep 19, 2025

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Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
Published on: March 17, 2023
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Boosting Testosterone Naturally in Hashimoto's: A Case Report on Trans-Geranylgeraniol Supplementation
Allyson LaGrutta1, Danielle Arnold2, Oscar Coetzee3
1MS, CNS, Warwick, New York, USA.
Alternative Therapies in Health and Medicine
|June 10, 2025
Summary
An integrative approach improved Hashimoto's thyroiditis and gut health. Supplementation with trans-geranylgeraniol significantly boosted testosterone levels and athletic performance in a male patient.
Area of Science:
- Endocrinology
- Immunology
- Gastroenterology
Background:
- Integrative nutrition addresses complex health issues like Hashimoto's thyroiditis, gut dysbiosis, and suboptimal testosterone.
- The patient, diagnosed with Hashimoto's in 2020, showed persistent autoimmunity and vitamin D insufficiency but stable testosterone until 2023.
- Declining testosterone, muscle mass, and performance emerged in 2023, necessitating further intervention.
Purpose of the Study:
- To detail an integrative nutrition strategy for a patient with Hashimoto's thyroiditis, gut dysbiosis, and declining testosterone.
- To evaluate the efficacy of trans-geranylgeraniol supplementation for improving testosterone levels and physical performance.
Main Methods:
- Initial interventions included anti-inflammatory diet, gluten/dairy elimination, vitamin D3/K2 repletion, and gut-directed therapies.
- Thyroid biomarkers and gut health were monitored.
- A targeted supplementation of trans-geranylgeraniol (600 mg/day) was administered for nine weeks.
Main Results:
- Foundational strategies led to steady improvement in thyroid biomarkers.
- Trans-geranylgeraniol supplementation resulted in a clinically significant increase in total testosterone.
- Notable improvements in strength and athletic performance were observed concurrently.
Conclusions:
- This case highlights the interconnectedness of immune, endocrine, and gastrointestinal systems.
- A multifaceted, non-pharmacological approach can optimize hormonal regulation and metabolic resilience.
- Systems-based care is crucial for complex physiological imbalances.
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