TLDR Chronic DHEA supplementation slightly increases testosterone in hair but stays within safe limits.
The study investigated the effects of chronic DHEA supplementation on testosterone concentrations in human hair. DHEA, a steroid produced by the ovaries and adrenal glands, can convert to testosterone and estrogen. Despite its use by athletes for potential performance enhancement, previous studies showed no significant effects on body weight or metabolism. The International Olympic Committee banned DHEA in 1996. In this study, seven male volunteers took 50 mg of DHEA daily for 30 days. Results indicated that while DHEA could convert to testosterone, the urinary testosterone/epitestosterone ratio was only slightly affected and remained within acceptable limits.
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December 2012 in “Frontiers in bioscience” Vitamin D and estrogen may help protect heart and kidney health, and maintaining sufficient vitamin D levels could be especially beneficial for African Americans, postmenopausal women, and people with chronic kidney disease.
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December 2020 in “Cleveland Clinic Journal of Medicine” Testosterone and DHEA can benefit women's health but must be prescribed carefully due to potential risks.
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October 2014 in “The Journal of Clinical Endocrinology & Metabolism” The guidelines advise against using testosterone and DHEA in women for most conditions due to safety and effectiveness concerns, but suggest considering testosterone for postmenopausal women with low sexual desire.
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August 2000 in “Journal of Endocrinology” DHEA acts like a male hormone on rat skin glands and doesn't turn into female hormones there.
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May 2013 in “The Journal of Steroid Biochemistry and Molecular Biology” Testosterone therapy can improve sexual desire and function in postmenopausal women but should be used cautiously and not based solely on testosterone levels.