Any studies showing green tea raises testosterone?

[john10960]

Are there any studies out there that show this?

thanks!

 

[kboxer7]

Actually, the opposite.

20% reduction.

http://suppversity.blogspot.com/2011/09/5-cups-of-green-tea-day-lower-serum.html?m=1

 

[ManimalPatB]

Actually, the opposite.

20% reduction.

http://suppversity.blogspot.com/2011/09/5-cups-of-green-tea-day-lower-serum.html?m=1

Yeah, that's what I have heard for years. Granted I have a cup of green tea a day because its fantastic!!!

 

[Grambo]

Good find.

 

[john10960]

Shouldve been more clear with the thread subject.. Oops.

Ive seen mainly studies saying green tea lowers testosterone, but I have seen some, like the one below (sorry cant post link, not high enough post count yet, heres the title though "Soy Phytochemicals and Tea Bioactive Components Synergistically Inhibit Androgen-Sensitive Human Prostate Tumors in Mice1") that show green tea elevates testosterone:

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Mice treated with black tea tended to have a greater serum testosterone concentration (34.4%, P = 0.50) and had a 72% lower DHT concentration than controls (P < 0.05), suggesting that black tea may contain components that inhibit the activity of 5α-reductase, an enzyme that converts testosterone to the more bioactive DHT. Green tea tended to increase serum testosterone and DHT levels by 73.8% (P = 0.14) and 194% (P = 0.076), respectively. The combination of SPC and green tea reduced serum levels of DHT (P < 0.05).
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So I was just wondering, does anyone know of any other studies that show green tea elevates testosterone besides the above mentioned one? Seems to be some conflicting results..

 

[cobri66]

http://www.ironmanmagazine.com/effect-of-tea-on-testosterone/

interesting read

 

[kboxer7]

Can also reduce thyroid function (T3/T4) by up to 40% or so at consumption of 1-2L per day. Which in concentrated form may be reached VERY easily in diet pills etc.

Abulfadle, Khaled Abdelfattah, et al. "Effect of Excessive Green Tea Versus Fluoride and Caffeine on Body Weight and Serum Thyroid Hormones in Male Mice." Journal of Physiology and Pharmacology Advances 5.2 (2015): 565-573.