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What if more testosterone isn't the answer? One human study found that L carnitine increased androgen receptor content in skeletal muscle by approximately 15% after just 21 days. Interestingly, testosterone levels didn't increase. Frontiers Testosterone deficiency impairs cardiac interfibrillar mitochondrial function and myocardial contractility while inducing oxidative stress The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link L Carnitine for PCOS: Everything You Need to Know PCOS Nutrition Center Evaluation of L Carnitine Potential in Improvement of Male Fertility
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