Nutrition Guide

Although less common than SERMs or cortisol controllers, testosterone boosters help the body produce most testosterone and expedite the process of returning the body's natural production of testosterone to normal.

Bodybuilding supplements are substances taken by athletes involved in weight training or other sports to aid in the building of lean muscle mass or to cause fat loss. Bodybuilding supplements may also be used to improve sports performance and improve recovery from events and training. One important distinction exists in many weight training groups between supplements and anabolic steroids. There is a common misconception among non-supplement-users that supplementation for muscle-building purposes is the same as steroid use or, at the very least, leads to steroid use.[citation needed] However, this charge is often challenged by supplement users on the grounds that supplements

Sustamed 250 is a genericized trademark for an oil-based injectable blend of four esterized testosterone compounds. 30mg Testosterone Propionate 60mg Testosterone Phenylpropionate 60mg Testosterone Isocaproate 100mg Testosterone Decanoate Sustamed is produced by Balkan Pharmaceuticals in Republic of Moldova. For therapeutic information and other details, refer to the article on Testosterone.

Sustanon 250 is a trade name for an oil-based injectable blend of four esterized testosterone compounds: 30mg Testosterone Propionate 60mg Testosterone Phenylpropionate 60mg Testosterone Isocaproate 100mg Testosterone Decanoate Sustanon 100 is similar, though with three esters. The smaller dose is for paediatric use. 20mg Testosterone Propionate 40mg Testosterone Phenylpropionate 40mg Testosterone Isocaproate The different testosterone esters provide for different half lives. Esterization of the testosterone molecules provides for a sustained (but non-linear) release of testosterone from the injection depot into the blood plasma. While the intention of the mixed testosterone esters in Sustanon is to provide more stable serum testosterone levels, a single long-ester testosterone, such as testosterone cypionate or

The activity of boldenone is mainly anabolic, with a low androgenic potency. It has a very long half-life, and can show up on a steroid test for up to 1.5 years, due to the long undecylenate ester attached to the parent steroid. Boldenone will increase nitrogen retention, protein synthesis, increases appetite and stimulates the release of erythropoietin in the kidneys. The drug is commonly used in doping within bodybuilding, even though this use is illegal. If intended to assist in bodybuilding, the drug is taken as part of a steroid stack of other anabolic steroids, usually with a potent androgen like

There are many routes of administration for testosterone. Forms of testosterone for human administration currently available include injectable (such as testosterone cypionate or testosterone enanthate in oil), oral,[12] buccal,[13] transdermal skin patches, and transdermal creams or gels.[14] In the pipeline are "roll on" methods and nasal sprays.

Metabolife was founded in the early 1990's by Michael Ellis, a former police officer on probation for charges relating to his involvement with a methamphetamine lab.[3][4] Ellis and a boyhood friend, Michael Blevins, were arrested in 1989 for producing and distributing methamphetamine. Both Ellis and Blevins cooperated with federal authorities in return for lighter sentences. Following Blevins' release from prison, the two formed Metabolife to market ephedra, an herbal supplement containing compounds chemically related to methamphetamine.[4] Metabolife's ephedra supplement was initially marketed as a bodybuilding supplement, but in 1995 was rebranded as an aid for dieting. The product became highly successful

A gainer is a bodybuilding supplement usually comprised of both high and low glycemic carbohydrates and protein (usually in the form of calcium caseinate, milk and whey protein) and often other nutrients such as certain vitamins and minerals. Gainers are used by bodybuilding and strength athletes, both amateur and professional alike. When performing intensive exercise the stress can cause the release of hormones such as cortisol in order to quickly make available energy to the body. Cortisol forces breakdown of glycogen, protein (muscle) and fat deposits which are used in gluconeogenesis. Gainers seek to combat this effect after (and sometimes during)

Glutamine is the most abundant amino acid found in human muscle and is supplemented because supplement manufacturers claim the body's natural glutamine levels are depleted during anaerobic exercise. It is argued that bodybuilders should supplement with glutamine, as deficiency may lead to a weakened immune system and wasting of muscle tissue.[citation needed] It is sold as a micronized, instantly soluble powder. Some studies [2] [3] have shown there to be no significant effect of glutamine on bench press strength, knee-extension torque or lean muscle mass when compared to controls taking a placebo, though another study found that glutamine is beneficial

A thermogenic is a broad term for any supplement that the manufacturer claims will cause thermogenesis, resulting in an increased metabolic rate, increased body temperature and consequently an increased rate in the burning of body fat. Until recently almost every product found in this supplement category comprised the "ECA stack": ephedrine, caffeine and aspirin. However, on February 6, 2004 the Food and Drug Administration (FDA) banned the sale of ephedra and its alkaloid, ephedrine, for use in weight loss formulas. Several manufacturers replaced the ephedra component of the "ECA" stack with bitter orange or citrus aurantium (containing synephrine) instead of

Like other steroid hormones, testosterone is derived from cholesterol. The largest amounts of testosterone are produced by the testes in men. It is also synthesized in far smaller quantities in women by the thecal cells of the ovaries, by the placenta, as well as by the zona reticularis of the adrenal cortex in both sexes. In the testes, testosterone is produced by the Leydig cells. The male generative glands also contain Sertoli cells which require testosterone for spermatogenesis. Like most hormones, testosterone is supplied to target tissues in the blood where much of it is transported bound to a specific plasma

When determining levels of circulating estradiol or testosterone, either a total measurement could be done that includes the "free" and the bound fractions, or only the "free" hormone could be measured. A free androgen index expresses the ratio of testosterone to the sex hormone binding globulin and can be used to summarise the activity of free testosterone. The total testosterone is likely the most accurate measurement of testosterone levels and should always be measured at 8 o'clock in the morning. Sex hormone binding globulin can be measured separate from the total fraction of testosterone.

Appropriate testosterone therapy can prevent or reduce the likelihood of osteoporosis, type 2 diabetes, cardio-vascular disease (CVD), obesity, depression and anxiety and the statistical risk of early mortality. Low testosterone also brings with it an increased risk for the development of Alzheimer’s Disease (Pike et al, 2006, Rosario 2004). A small trial in 2005 showed mixed results.[19] Large scale trials to assess the efficiency and long-term safety of testosterone are still lacking.[

In enzymology, a testosterone 17beta-dehydrogenase (NADP+) (EC 1.1.1.64) is an enzyme that catalyzes the chemical reaction testosterone + NADP+ androst-4-ene-3,17-dione + NADPH + H+ Thus, the two substrates of this enzyme are testosterone and NADP+, whereas its 3 products are androst-4-ene-3,17-dione, NADPH, and H+. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 17beta-hydroxysteroid:NADP+ 17-oxidoreductase. Other names in common use include 17-ketoreductase, NADP+-dependent testosterone-17beta-oxidoreductase, and testosterone 17beta-dehydrogenase (NADP+). This enzyme participates in androgen and estrogen metabolism.

ZMA (Zinc monomethionine aspartate and Magnesium Aspartate) is a supplement used by bodybuilders and athletes. It was developed by Victor Conte (founder of BALCO Laboratories in Burlingame, California) and is a combination of zinc, magnesium and vitamin B6. The formula is "patent pending" and the name "ZMA" trademarked by SNAC System Inc, also founded by Victor Conte. ZMA is claimed to raise testosterone and IGF-1 levels which may aid in gaining muscle size and strength. ZMA is a combination of two minerals, zinc and magnesium, and Vitamin B-6 or pyridoxine. All three of these compounds are important in biological processes, and

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