Testosterone Supplements Not All They're Cracked Up to Be

Posted by freemexy on July 22nd, 2019

Buyer beware: When it comes to testosterone supplements, men should know a new study finds there is precious little evidence to support claims they will boost testosterone levels, sex drive, strength and overall energy.raw Testosterone decanoate powder

To come to this conclusion, the researchers first broke down 50 testosterone supplements into their component parts.The investigators then searched through a comprehensive scientific publication database for any solid proof that the supplements can do what the companies who make them say they can do.

But only 12% of the products contained any ingredient shown to provide some testosterone-related benefit in human trials. And nearly half (48%) contained ingredients that studies found could have negative impacts.

"In general, I'm not anti-supplements," noted study author Dr. Mary Samplaski. "I have a lot of patients who take them. But the FDA [U.S. Food and Drug Administration] says very clearly that these products should not claim to treat medical conditions. And 90% of these testosterone supplements do make such claims. So I was just really curious what the scientific support was for the claims being made."

Samplaski said, "What we found is that in the vast majority of cases there was no evidence to show that any of the ingredients in these testosterone supplements were effective in any way."The upshot, she said, is that "people should understand that just because there's a sexy website with a pic of Arnold Schwarzenegger doesn't mean it's the result they should expect."

Samplaski is director of male infertility with the Keck School of Medicine's department of urology at the University of Southern California, Los Angeles.To begin their work, her team googled "testosterone booster," and compiled a list of the first 50 supplements that came up.

About 90% claimed they would boost testosterone levels. Half claimed to improve libido, and nearly as many claimed to make men stronger. About 60% promoted building body mass, while 30% claimed to increase energy, and almost as many were touted as fat burners.

Supplements were then broken down by their ingredients, which included vitamins, minerals, folic acid, mushrooms and a variety of herbals. Ingredient amounts were also tallied, with an eye towards the FDA's stated daily allowance and tolerable upper intake levels for each.