Steroids: Do They Work and Are They Safe?
Legal steroids is a catch-all term for muscle-building supplements that dont fall under the category of illegal.
Anabolic-androgenic steroids (AAS) are synthetic (manufactured) versions of the male sex hormone testosterone. These are sometimes used illegally.
People who have muscle wasting or testosterone production disorders can take these hormone supplements for their condition if prescribed by a healthcare provider.
However, some athletes and bodybuilders illegally use these steroids to boost muscle mass or performance.
Some legal supplements do have science on their side and aren't entirely unsafe. But others may be completely ineffective or even cause harm.
Creatine is one of the most well-known performance support options. Its a naturally occurring substance found in foods like fish and meat. Its also sold in many stores as a muscle-building supplement.
Creatine has numerous documented benefits:
A 1999 studyTrusted Source found that weightlifters who used creatine showed nearly three times as much growth in muscle fibers and doubled overall body mass than those who didnt use creatine.
A 2003 studyTrusted Source found that using creatine when youre weight training can help build strength in your legs and increase your overall muscle mass.
A 2007 reviewTrusted Source of muscle-building supplements indicated that creatine is the best supplement for increasing muscle mass.
Research has also found no long-term health effects of using creatine.
Look out for any extra ingredients in supplements that may have side effects or cause allergic reactions.
Matrix metalloproteinase (MMP)
MMP is a blend of creatine, betaine, and dendrobium extract thats often sold as Craze or various other names.
This supplement is relatively safe to use. However, it doesnt result in the muscle-building claims this drugs marketing copy might lead you to believe.