Does Soy Lower Testosterone Levels See Findings From Studies More germane than the animal studies, is the publication of two case control studies each describing single individuals who experienced feminizing effects [erectile dysfunction (29, 308), increased estrogen levels , loss of libido (29, 308), gynecomastia , low testosterone ] in response to excessive isoflavone intake (360 mg d) and a pilot us. Although the low isoflavone intake among the soy consumers (mean intake, 3.4 mg day) in this study raises doubt about the plausibility of these findings, they do agree with animal data [381,382]. in men, a small pilot cross sectional study found that very modest soy consumption was associated with lower sperm concentration (sperm count was not.
Does Soy Lower Testosterone Best Man Unleashed But another study that analyzed findings from 41 peer reviewed reports published from 2010 to april 2020 revealed that there were no significant effects on testosterone levels caused by soy and. Peer reviewed studies published in english were selected if [1] adult men consumed soy foods, isolated soy protein, or isoflavone extracts (from soy or red clover) and [2] circulating t, shbg, free t, or calculated fai was assessed. data were extracted by two independent reviewers. isoflavone exposure was abstracted directly from studies. Here’s why [6 10]: limited impact: a meta analysis of 15 placebo controlled studies found that neither soy protein nor soy isoflavone supplements had a significant impact on testosterone levels in men. this suggests that, for most individuals, moderate soy consumption does not lower testosterone levels. Studies where soy lowers testosterone. there have been a couple of studies (some of them as small as 12 men) [1] that have shown that daily consumption of 20 40grams of soy protein can lower testosterone levels in trained men. [2] however, it should be noted that there are many more robust studies that prove the contrary.
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