ZMA is a natural boosting testosterone supplement; therefore it is not
banned by any athletic organizations and is preferred by athletes in
all sports who want to improve performance.
Research suggests that ZMA has significant anabolic benefits. A study
performed at Western Washington University (Bellingham) had NCAA football
players take ZMA or a placebo every night during an eight-week spring
training program. They reported that the athletes taking the ZMA supplement
experienced more than a 30-percent increase in testosterone levels, and
about a 5-percent increase in levels of the insulin-like growth factor 1
(IGF-1).* Those taking a placebo had a 10-percent decrease in testosterone
levels and a greater than 20-percent decrease in levels of IGF-1.
A 2007 study from Selcuk University (Konya, Turkey) reported that four
weeks of zinc supplementation in men increased testosterone levels at rest
and after exercise.* The same researchers also found similar results for
zinc supplementation on testosterone levels in a prior study with
competitive wrestlers. Researchers from the USDA reported that zinc
depletion decreased muscle endurance in subjects. This means that
maintaining optimal zinc levels is critical for your ability to complete a
number of reps with a given weight.
The same Western Washington University research team that did the ZMA
research also discovered in an earlier study that when subjects
supplemented with magnesium while following a 7-week leg training program,
their leg strength increased by 20-percent more than those taking a
Both zinc and magnesium are also suggested to blunt cortisol, a catabolic
hormone. German researchers found that triathletes taking a magnesium
supplement for four weeks maintained healthy cortisol levels at rest and
after a triathlon, as compared to athletes taking a placebo.* And Brazilian
researchers also reported that subjects supplementing with zinc maintained
healthy cortisol balance.*
ZMA may also boost growth hormone (GH) levels, albeit indirectly. ZMA
enhances sleep quality due to magnesium's ability to normalize and extend
stage 3 and stage 4 slow-wave sleep. This is critical, as deeper sleep can
help to raise GH levels, which peak during the night.
Research has confirmed that athletes are often deficient in both zinc and
magnesium. This is most likely due to several factors, such as zinc lost
through sweat during training, increased use of zinc by the body for
recovery and protein synthesis following training, and an increased loss of
zinc through urine. There may also be dietary factors involved.
See All LifeSource Vitamins Workout Products, Articles, and Studies:
Proudly Made in the USA!
Every LifeSource Vitamins product exceeds all regulation standards and
requirements set forth in the FDA's Code of Federal Regulation. (
21 CFR, part 111
as well as all Good Manufacturing Practices enforced by the FDA. CGMP's
provide for systems that assure proper design, monitoring, and control of
manufacturing processes and facilities. (
LifeSource Vitamins: Driven by Faith ~ Powered by God
Have Questions on this or any other product or health issue for you or a
loved one? It can be overwhelming we know. Call us, we will walk you
through what supplements will help you and which ones you really don’t
need. It’s what we do! Toll-Free: 800-567-8122
LifeSource Vitamins – Founded in 1992
100% of our profits are donated to Christian Organizations like these
and many others worldwide:
Campus Crusade for Christ - CRU
The Jesus Film Project
The Tim Tebow Foundation
The Herman and Sharron Show on CTN (Christian Television Network)
and many more…
E-mail Us: [email protected]
or Call Us: 800.567.8122
We Are Built on Compassion - Driven by Faith & Powered by God!
None of the above statements have been evaluated by the FDA. These products
are not intended to diagnose, treat, cure or prevent any disease.
As always, consult your physician before taking any and all
LifeSource Vitamins. Individual results may vary.
All the information contained throughout this website is based upon the
opinions of the founder of LifeSource Vitamins, Bruce Brightman, and the
entire team at LifeSource Vitamins whose relentless research and studies
have been ongoing since 1992. Other articles and information are based on
the opinions of the authors, who retain the copyright as marked in the
article. The information on this site is not intended to replace your
health care professional, but to enhance your relationship with them. Doing
your own studying and research and taking your health care into your own
hands is always best, especially in partnership with your health care
If you are pregnant, nursing, taking medications, or have any medical
conditions, always consult your health care professional before taking
supplements based on the information on this site.
LifeSource Vitamins: from the nutrients we choose, to the way we run
our business, we answer to God in all we do!