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Sheer Strength Testosterone Review

Sheer Strength Testosterone

Sheer Strength Testosterone is a test-booster by Sheer Strength Labs which contains a variety of fairly common alleged test-boosters…

Sheer Strength Testosterone is a test-booster by Sheer Strength Labs which contains a variety of fairly common alleged test-boosters…

[SKIP TO THE BOTTOM LINE]

D-ASPARTIC ACID:

D-Aspartic Acid has become extremely popular as a test-booster in recent years as a few studies now have indicated that it can boost Testosterone at least in the short-term.

A 2012 study from “Advances in Sexual Medicine”, the subjects of which were infertile men (initially low Testosterone) found that 2.66g of D-Aspartic Acid was able to significantly increase Testosterone levels when measured after 90 days of supplementation.

These results were in-line with those of an earlier study from 2009 in which D-Aspartic Acid supplementation raised Testosterone by 42% after 12 days in healthy men (initially normal Testosterone).

However, a 2013 study published in “Nutrition Research” found that athletes who supplemented with D-Aspartic Acid for 28 days showed no difference in testosterone levels.

The researchers in the failed study noted abnormally high levels of D-Aspartate Oxidase, the enzyme which degrades D-Aspartic Acid, indicating that prolonged supplementation in individuals with healthy Testosterone levels may cause “negative feedback”.

Unfortunately, Sheer Strength Testosterone contains only 650mg of D-Aspartic Acid per serving, nowhere near the 3200mg dose that has proven effective for boosting Testosterone in the short-term.

FADOGIA AGRESTIS:

Fadogia agrestis is an African shrub which has historically been used as an aphrodisiac and pro-erectile agent in certain sects of traditional medicine.

A 2005 study, published in the “Asian Journal of Andrology”, found that rats given Fadogia agrestis extract at oral doses of 18, 50, and 100mg/kg daily experienced dose-dependent increases in Testosterone, with the highest dose increasing achieving a roughly 6-fold increase by day 5 of treatment.

Despite the notable increase observed in this study, the effect of Fadogia agrestis on Testosterone has not been studied in human subjects.

Sheer Strength Testosterone contains 500mg of Fadogia Agrestis but, given that no human studies exist, the efficacy of such a dose is difficult to interpret.

FENUGREEK SEED EXTRACT:

While Fenugreek (as Testofen) has demonstrated the ability to increase Testosterone in one study, it has failed to do so elsewhere under similar conditions. We discuss Fenugreek and its effects on Testosterone in depth in this article.

Sheer Strength Testosterone contains 500mg of Fenugreek extract which may or may not increase Testosterone (unreliable), but may enhance libido and overall sexual well-being.

EURYCOMA LONGIFOLIA:

Eurycoma Longifolia, also known as Tongkat Ali has been shown, in various studies, to increase Testosterone in male rats, but the only human studies that exist have tested the effects of Eurycoma Longifolia in infertile men, not healthy men.

A 2010 study published in the “Asian Journal of Andrology” found that supplementation with 200mg of an extract of Eurycoma Longifolia significantly improved various indications of male fertility (in humans), though the mechanism of action was unknown.

A 2012 study published in “Andrologia: Volume 44” (the same researchers from the above mentioned human study) found that men suffering from Hypogonadism (diminishing functionality of the gonads) who were treated with a 200 mg daily dose of Eurycoma longifolia extract reached normal Testosterone levels after a 30 day period. To be fair, at the start of the study about 35% of the men were showing normal Testosterone levels, and at the end about 90% showed normal levels. Still, 35% to 90% is clearly statistically significant.

Sheer Strength Testosterone features a clinical 200mg dose of Eurycoma Longifolia which is certainly effective for encouraging optimal (healthy) Testosterone levels.

GINGKO BILOBA:

Gingko, while commonly used as a nootropic, has been under investigation for a variety of applications, including as a potential alternative treatment for erectile dysfunction. It has long been used in alternative medicine for ED because of its alleged ability to enhance blood flow via increasing nitric oxide.

However, a 2011 study found elevated dopamine levels in rats that were given Gingko extract. Dopamine has been identified as a major influence on sexual response, and this offers an alternative mechanism of action by which Gingko may improve erectile function.

However, the evidence is far from conclusive, and a good deal of research would be needed before drawing any conclusions about Gingko as a treatment for erectile dysfunction.

The 120mg dose of Gingko present in Sheer Strength Testosterone may be enough to improve sexual well-being, but there is no evidence to suggest that it can influence Testosterone in healthy individuals.

THE BOTTOM LINE:

Sheer Strength Testosterone contains a few effective test-boosters, though most of which have only been studies in subjects with initially low Testosterone. That said, the formula is suitable for those who wish to maintain consistently healthy Testosterone levels and may be especially beneficial to those with abnormally low Test. At just over $1 per serving, Sheer Strength Testosterone is priced about average compared to similar Test-boosters we’ve seen.

FIND SHEER STRENGTH TESTOSTERONE

REFERENCES
  1. D’Aniello, Autimo, Anna Di Cosmo, Carlo Di Cristo, Lucio Annunziato, Leonard Petrucelli, and George Fisher. “Involvement of D-Aspartic Acid in the Synthesis of Testosterone in Rat Testes.” Life Sciences 59.2 (1996): 97-104.
  2. Topo, Enza, et al. “The role and molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats.” Reprod Biol Endocrinol 7.120 (2009): 6.
  3. D’Aniello, Gemma, et al. “d-Aspartate, a key element for the improvement of sperm quality.” Advances in Sexual Medicine 2 (2012): 45.
  4. Willoughby, Darryn S., and Brian Leutholtz. “d-Aspartic acid supplementation combined with 28 days of heavy resistance training has no effect on body composition, muscle strength, and serum hormones associated with the hypothalamo-pituitary-gonadal axis in resistance-trained men.” Nutrition Research 33.10 (2013): 803-810.
  5. Yakubu, M. T., M. A. Akanji, and A. T. Oladiji. “Aphrodisiac potentials of the aqueous extract of Fadogia agrestis (Schweinf. Ex Hiern) stem in male albino rats.” Asian Journal of Andrology 7.4 (2005): 399-404.
  6. Tambi, M. I. B. M., M. K. Imran, and R. R. Henkel. “Standardised water‐soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late‐onset hypogonadism?.” Andrologia 44.s1 (2012): 226-230
  7. Ang, H. H., S. Ikeda, and E. K. Gan. “Evaluation of the potency activity of aphrodisiac in Eurycoma longifolia Jack.” Phytotherapy Research 15.5 (2001): 435-436.
  8. Zanoli, P., et al. “Influence of< i> Eurycoma longifolia on the copulatory activity of sexually sluggish and impotent male rats.” Journal of ethnopharmacology 126.2 (2009): 308-313.
  9. Ang, H. H., S. Ikeda, and E. K. Gan. “Evaluation of the potency activity of aphrodisiac in Eurycoma longifolia Jack.” Phytotherapy Research 15.5 (2001): 435-436.
  10. Tambi, Mohd Ismail Bin Mohd, and M. Kamarul Imran. “Eurycoma longifolia Jack in managing idiopathic male infertility.” Asian journal of andrology 12.3 (2010): 376-380
  11. Bhat, Rajeev, and A. A. Karim. “Tongkat Ali (< i> Eurycoma longifolia Jack): A review on its ethnobotany and pharmacological importance.”Fitoterapia 81.7 (2010): 669-679.

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