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GHK Cu levels decline significantly with age
*Endocrine Reviews*, 29(5), 581602
Possible symptoms associated with low testosterone may include: * Low libido * Reduced energy * Changes in mood or motivation * Difficulty maintaining muscle * Changes in body composition * Reduced exercise performance * Changes in sexual function Symptoms alone are not enough to diagnose low testosterone
Bhatia M, He M, Zhang H, et al
Blood flows away from muscles toward skin and organs
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