Some Important Things Men Need to Know About Testosterone

Take away a man’s testosterone and he isn’t a man. Well, at least he’s not the man he once was.

While the prevalence of testosterone deficiency in men rises with advancing age, some research concludes there may be smart strategies we can put in place to maintain it. There are some researchers who believe that a declining testosterone levels in men are not a part of normal aging.1 And yet, testosterone levels among American men have been in decline over recent decades.2

The question is, what can we do about it. And while eating healthy, getting exercise and consulting a doctor are always good first steps in combating health issues, there are also nutritional approaches to dealing with testosterone concerns. One such approach is Zetosterone™, a nutritional supplement formula that contains a combination of cornerstone nutrients for men’s health.* Zestosterone™ is packed with evidence-based ingredients that men can utilize as a proactive way support healthy testosterone levels, along with healthy prostate function.*

Is It Time to Check Your Testosterone?

A man might have concerns about his testosterone, perhaps based on a change in his sex drive, or some other physiological clues. Such suspicions should be followed up with a doctor, who may do a blood test.

But there is one odd clue that a man might overlook…

Clinical research indicates that hand grip strength may correlate with testosterone levels.* One study from 2016 noted that young men age 20-34 years of age could apply only 98 pounds of force with a right-handed grip, which is down from 117 pounds by a man of the same age in a 1985 study.3 Natural decline in hand grip strength can begin as early as age 55.4 Men with stronger hand grip strength tend to have better quality erections.5

And it’s not just virility and sex drive that goes wanting with a shortage of testosterone. Maintaining healthy testosterone levels has a broad effect upon a man’s health.* As stated in a review of tetosterone’s effects on men, published in the scientific journal Advances in Experimental Medicine and Biology, “Testosterone … modulates important biochemical signaling pathways of human physiology and plays a critical role in the growth and/or maintenance of functions in a host of tissues and organs.”6

Now for the Good News

Thankfully, there are nutritional ways that we can support healthy testosterone levels — and Zestosterone™ blends together some fundamental ingredients to help get the job done.* Think of these as the basics you can’t afford to miss out on if you want to maintain healthy T.

  • Vitamin D: Vitamin D deficiency has become a real concern these days, with one national survey revealing that over 41% of American adults may be low in this essential vitamin.7 And as it turns out, Vitamin D levels do affect testosterone levels – and a very specific amount can help support testosterone levels in men deficient in Vitamin D.8 This amount is 3332 IU of Vitamin D taken a daily — so that is the exact amount you will find in Purity’s Zestosterone™ formula.
  • Boron: In an important clinical study a 6-milligram daily dose of boron among healthy adult males significantly increased free (unbound) testosterone levels within hours of consumption while decreasing estrogen and markers of inflammation (C-reactive protein and TNF –tumor necrosis factor) and raised vitamin D levels.  All this was accomplished after just 1-week of supplementation.9 Given that the tolerable upper limit (without side effects) for boron is 20 milligrams per day, Purity put 6 mg of patented Calcium Calcium Fructoborate Boron in Zestosterone™ so you can better regulate your total boron intake if you take other forms of this mineral.
  • Zinc: Zinc is a crucial “male mineral” that supports fertility and libido, while also helping to keep the prostate healthy.* This essential mineral is needed for the function of nearly 300 enzymes in the body, and it is involved in many areas of health including immunity and reproductive health.* Zestosterone packs in a full daily allowance of premium-grade zinc as patented OptiZinc®, a unique mineral chelate that pairs zinc with the amino acid L-methionine.
  • Grape Seed Extract: Zestosterone™ also contains Leucoselect® — a top-quality patented grape seed extract — to add circulatory support, which is important to healthy endothelial and blood vessel function in men.*
  • Beta Sitosterol: Keeping the prostate in good shape is vital for overall male health as we age. Beta Sitosterol, part of a family of substances found in plants called “phytosterols,” was put to the test as a men’s health nutrient in a placebo-controlled study reported in the British Journal of Urology. In the study, 177 men took Beta Sitosterol daily for 6 months.10 Results confirmed the ability of Beta Sitosterol to support healthy prostate and urinary function.* Zestosterone™ delivers 130 mg of Beta Sitosterol per serving, the precise dosage used in the clinical trial.

Zestosterone™ represents male health evidence-based nutrition at the highest level. It is formulated with exacting amounts of fundamental nutrients to form a nutraceutical designed to provide benefits that allow a man to feel like and perform like the man they aspire to be.

Zestosterone™ Features & Benefits:

  • Clinically Studied Dose of Vitamin D for Healthy Testosterone Levels*
  • Prostate Support from Clinically Research Level of Beta Sitosterol*
  • Circulatory Support from Leucoselect® Grape Seed Extract
  • Unique, Patented Form of Boron
  • Patented OptiZinc® to Support Libido*


1 – Declining testosterone levels in men not part of normal aging.

2 – A Population-Level Decline in Serum Testosterone Levels in American Men.

3 – Comparative study of millennials’ (age 20-34 years) grip and lateral pinch with the norms.

4 – Give grip strength a hand.

5 – Association between hand-grip strength and erectile dysfunction in older men.

6 –Negative Impact of Testosterone Deficiency and 5α-Reductase Inhibitors Therapy on Metabolic and Sexual Function in Men

7 – Prevalence and correlates of vitamin D deficiency in US adults.

8 – Effect of vitamin D supplementation on testosterone levels in men.

9 – Comparative effects of daily and weekly boron supplementation on plasma steroid hormones and proinflammatory cytokines.

10 – A multicentric, placebo-controlled, double-blind clinical trial of beta-sitosterol (phytosterol) for the treatment of benign prostatic hyperplasia.