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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone and Men's Health Articles
Male sex hormones, aging, and inflammation
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<blockquote data-quote="madman" data-source="post: 242380" data-attributes="member: 13851"><p><strong>Fig. 5 <u>Causes of Decline in Androgen Levels with Age</u>. Androgen levels decline with age due to many factors including decreased StAR protein (Manna et al. 2016) and secretion of GnRH (Keenan et al. 2006). Levels of SHBG have been observed to increase at a dramatic rate in older men (Feldman et al. 2002). Other contributing factors include a decline in Leydig cell number and function (Korenman et al. 1990), as well as LH levels (Veldhuis et al. 1999). Androgen levels also decline with the occurrence of varicocele (Tanrikut et al. 2011), negative feedback on the HPG axis (Pincus et al. 1997), a decline in the concentration of AR (Haji et al. 1981), decreased testicular volume (Mahmoud et al. 2003), and increased estrogen levels (Ferrini and Barrett-Connor 1998)</strong></p><p><strong>[ATTACH=full]28284[/ATTACH]</strong></p></blockquote><p></p>
[QUOTE="madman, post: 242380, member: 13851"] [B]Fig. 5 [U]Causes of Decline in Androgen Levels with Age[/U]. Androgen levels decline with age due to many factors including decreased StAR protein (Manna et al. 2016) and secretion of GnRH (Keenan et al. 2006). Levels of SHBG have been observed to increase at a dramatic rate in older men (Feldman et al. 2002). Other contributing factors include a decline in Leydig cell number and function (Korenman et al. 1990), as well as LH levels (Veldhuis et al. 1999). Androgen levels also decline with the occurrence of varicocele (Tanrikut et al. 2011), negative feedback on the HPG axis (Pincus et al. 1997), a decline in the concentration of AR (Haji et al. 1981), decreased testicular volume (Mahmoud et al. 2003), and increased estrogen levels (Ferrini and Barrett-Connor 1998) [ATTACH type="full"]28284[/ATTACH][/B] [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone and Men's Health Articles
Male sex hormones, aging, and inflammation
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