Evidence supporting the use of: Testes
For the body system: Testosterone

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Testes extract has been used in medicine, particularly in the early 20th century, to address male hypogonadism and support testosterone levels. The justification for its use is primarily scientific, as the testes are the primary source of testosterone production in males. Early preparations often involved desiccated (dried) animal testes, which were administered in an attempt to replace or supplement endogenous testosterone. The rationale was straightforward: since the testes produce testosterone, consuming extracts might restore or enhance testosterone levels in those with deficiencies.

However, with the advent of synthetic and bioidentical testosterone therapies, the use of whole testes extracts has largely fallen out of favor due to concerns about efficacy, consistency, and safety. Modern scientific evidence supports the role of the testes in testosterone production, but it does not robustly support the efficacy of oral or injected testes extracts in significantly increasing testosterone levels in humans compared to standard testosterone replacement therapies. There are a few animal studies and some case reports that suggest a physiological basis for their use, but large-scale, high-quality human trials are lacking.

In summary, while the scientific rationale for using testes extracts to support the testosterone body system is clear, the clinical evidence for its effectiveness is moderate at best, especially compared to current medical therapies.

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Other body systems supported by Testes

Testosterone

Products containing Testes

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