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supplements may contain many unadvertised impurities. When Catlin's team tested seven different brands of andro, they found that actual amounts of andro differed from what advertisers claimed, and one dose contained testosterone, which is illegal, he reports.
"What dietary supplement customers are buying isn't always what they are getting," he says. "This is a case where the buyer must beware."
"We wondered where the 19 norandrosterone came from, because it's not likely to be a metabolic byproduct of andro," he explains.
Catlin and colleagues decided to analyze the content of the andro capsules. What they discovered was that each capsule contained enough trace contaminant to Louis Vuitton Belt White produce a positive urine test for steroid use.
the National Collegiate Athletic Association, the National Football League, the National Gym Association, the North American Boxing Federation, and professional tennis have banned the supplement.
Andro May Contain Unwanted Gucci Belt Black And Gold
Researchers divided 37 healthy men aged 20 to 44 into three groups to test how their bodies reacted to andro. The first group took 100 mg a day for a week, the second group took 300 mg a day for a week, and a third group did not consume andro at all.
Surprisingly, the urine of all 24 men who consumed andro contained 19 norandrosterone, a byproduct of the banned steroid nandrolone. Twenty of the men's samples contained enough of the steroid byproduct to test positive at the Olympics, according to Catlin.
Andro has been alleged to increase muscle size and strength, and the supplement garnered headlines two years ago when baseball slugger Mark McGuire admitted using it. While Major League Baseball is reviewing the product, Hermes Belts Womens
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Nov. 21, 2000 Several studies in recent months have shown that the over the counter dietary supplement androstenedione, commonly known as "andro," does not improve athletic performance and may cause serious harm to the body. Researchers reporting in the Nov. 22 edition of the Journal of the American Medical Association may have found another reason not to take the substance: Andro can contain a contaminant that tests positive for a banned steroid. "Very small amounts of steroids are absorbed by the body, so even a tiny amount of contaminant can result in a positive test."
Catlin says the manufacturer of the andro cannot be blamed since the amount of the byproduct is far below the FDA levels for regulated drugs. And not all andro may be similarly contaminated, he says.
Yet, Catlin says the take home message is that unregulated over the counter Gucci Belt With Stars
Catlin notes that competitive athletes are scrupulously watched these days. "If you take this supplement and you test positive, you could be out of competition for two years," he tells WebMD. "The bottom line for athletes is that it is not safe to take anything."
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