Conversely, supplementing with Vitamin D can raise testosterone levels and improve performance. In a noteworthy trial on healthy overweight men who were initially vitamin D deficient and low in testosterone, supplementation with 83 ug (3332 IU) vitamin D daily for one year significantly raised their 25-hydroxyvitamin D as well as total and free testosterone levels. (30) Vitamin D supplementation may also reverse the negative effects of vitamin D deficiency on muscle strength and boost exercise capacity, as it did in older women with initial low baseline values. (19) In fact, one group of researchers proposes that maintaining 25-hydroxyvitamin D blood levels above the normal reference range could have a dramatic effect in raising testosterone levels, increasing muscle function and strength, and decreasing recovery time from training. (34)
[Note: TestoXLR8Pro™ contains the recommended daily allowance (RDA) for vitamin D for adults up to age 70, 600 IU. Your total vitamin D intake depends on the amounts contained in any other supplements you consume, such as a multi-vitamin, a vitamin D supplement, etc., the foods you eat, and the amount of sunlight you are exposed to (vitamin D is also synthesized in the skin in response to sunlight). The reference range for 25-hydroxyvitamin D is 20-100 ng/ml, with optimal blood levels in the approximate range of 50-80 ng/ml, which can only be determined by blood testing; it usually requires between 2000 and 5000 IU of ingested vitamin D to reach optimal levels. Do not consume high amounts of vitamin D (i.e., vitamin D intake that would result in 25-hydroxyvitamin D blood levels approaching or above 100 ng/ml, as suggested in this last study) without first consulting your health care professional, as high levels may be potentially toxic.]
Zinc and Boron
Zinc is an essential mineral crucial to multiple aspects of cellular metabolism and physiology, including the activity of over 100 enzymes, as well as immune function, protein synthesis, wound healing, growth and development, sexual function, and hormone modulation. Zinc is not stored in the body, so regular dietary intake is required. Studies have shown that low zinc levels are linked with low testosterone, sexual dysfunction, and infertility in men, (35-38) and that oral zinc supplementation raises testosterone levels. (35,38) In a study on men 55 to 73years oldwho were marginally zinc deficient, 30 mg zinc taken as an oral supplement for six months resulted in a doubling of their blood testosterone levels. (38)
[Note: TestoXLR8Pro™ contains 15 mg zinc (the RDA is 8 mg for women and 11 mg for men). Multivitamins typically contain 10 to 15 mg zinc, so if you take a multivitamin in addition to TestoXLR8Pro™, that will add up to approximately 25 to 30 mg zinc daily which is in the dose range of this last study. Check your multivitamin and other supplement labels carefully since the upper recommended limit for zinc is 40 mg per day.]
Boron is a trace mineral important to many aspects of health, including bone mineralization, inflammation reduction, antioxidant status, and sex hormone production. Although studies have shown conflicting results, a few do indicate that boron supplementation influences sex hormone levels in both men and women. A study on healthy male volunteers taking 10 mg boron daily for one week found significant increases in the men’s free testosterone levels accompanied by decreases in estradiol. (39) Researchers believe that boron may interfere with the chemical interactions between testosterone and SHBG (a protein that binds testosterone), essentially causing an “uncoupling” of the two, (40) which would explain the rise in free testosterone in the male volunteers. This unbinding action mediated by boron, which frees up biologically active testosterone, may be beneficial to aging men with elevated levels of SHBG and low free and total testosterone. In postmenopausal women, 3 mg boron per day markedly raised levels of both estradiol and testosterone. (41) Additionally, boron supplementation has been shown to increase blood levels of 25-hydroxyvitamin D in animals and humans, (42) which may be another mechanism by which boron raises testosterone. TestoXLR8PRO™ contains a source of soluble boron known as calcium fructoborate, a natural fructose-boron complex found in fruits and vegetables; a daily serving of TestoXLR8PRO™ provides 5 mg of elemental boron, which is in the range used in these studies.
Finally, the last ingredient we will discuss is superoxide dismutase (SOD), an antioxidant enzyme present in relatively high concentrations in the testes, where most testosterone is produced in men. Oxidative damage to tissues that manufacture testosterone may cause the hormone’s levels to decline with age; antioxidants such as SOD may help prevent this damage. SOD can also counter the increased oxidative stress associated with exercise. TestoXLR8Pro™ contains a concentrated source of SOD known as TetraSOD®, derived from a marine phytoplankton strain grown under patent-pending technology. A study on exercise capacity in young football players demonstrated that 25 mg TetraSOD® (the equivalent dose in TestoXLR8Pro™) taken daily for one month improved several blood markers of oxidative stress and enhanced athletic performance. (43)
Putting it All Together
We have covered a lot of territory. First, we examined the negative impact of aging on sex hormone production (lowered testosterone, in particular) which results in the development of a variety of age-related diseases as well as physical declines such as bone and muscle loss and reduced function in both men and women. Next, we learned that, thankfully, there is something we can do about it. Research has demonstrated that restoring testosterone to more youthful levels can ameliorate and even reverse these negative consequences of aging, leading to gains in muscle mass and strength and improved physical performance in both sexes.
Hormone replacement therapy is often the first-line approach to restore deficient hormones, but there’s a safe, effective, and prescription-free alternative − the combination of targeted and clinically tested nutrients in TestoXLR8Pro™. Most ingredients in the formulation are in the dose ranges used in clinical studies and, as we just reviewed, each one individually has been shown to influence endogenous testosterone levels; combined they exert an overall potent and synergistic effect. Some nutrients directly stimulate testosterone manufacture, while others block age-related processes that can deplete the hormone, such as binding to SHBG or conversion by enzymes to estrogen and DHT. Together, these various mechanisms improve and “revitalize” your biochemistry, promoting higher levels of free and total testosterone in your bloodstream for noticeable gains in mass, strength, and performance, with additional benefits to overall health.
TestoXLR8Pro™ should be taken at a dose of one capsule three times daily. For best results, use as part of a comprehensive program which includes a healthy diet with ample servings of protein coupled with an exercise program with strength/weight training at least three times a week.
There are dozens of testosterone-enhancers to choose from, but TestoXLR8Pro™, with its unique combination of clinically proven and multi-acting ingredients, is a cutting-edge product that will support your performance goals and general health.
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