Anabolic steroids raise levels of harmful protein

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A new study provides more evidence that long-term use of anabolic steroids can cause heart and blood vessel disease, and may even boost the risk of sudden death.

UK researchers found that bodybuilders who used the muscle-building steroids had increased levels of homocysteine, a protein tied to increased mortality, heart disease risk and blood vessel damage, compared with bodybuilders who didn’t use the performance-enhancing drugs.

Three steroid users died suddenly during the course of the study, and all had homocysteine levels that were higher than the average for steroid-using study participants.

"The findings of this study suggest that anabolic-androgenic steroids are detrimental to cardiovascular health and appear to be implicated in cardiovascular mortality in long-term anabolic-androgenic steroid abuse,” Dr. Michael R. Graham of the University Glamorgan in Pontypridd, Wales and colleagues conclude.

There have been reports suggesting that steroid users face an increased risk of sudden death as well as acute clotting-related health problems such as stroke and heart attack, Graham and his team note.

To determine whether steroid users might have increased homocysteine levels, which could contribute to the risk of heart and blood vessel problems, the researchers measured levels of homocysteine and several other substances in the blood in bodybuilders who had been using steroids for more than 20 years.

They were compared to steroid-using bodybuilders who had abstained from the drugs for three months, bodybuilders who had never used steroids, and sedentary, non-steroid-using men.

Current and past steroid users had higher homocysteine levels than other study participants, as well as “dramatically elevated” levels of hematocrit.

As mentioned, three of the steroid-using bodybuilders died during the study period and all of them had significantly higher levels of homocysteine than the average for the steroid-using group.

Sudden death and acute clotting events “may represent under-appreciated risks” of anabolic steroid use, the team warns.

SOURCE: British Journal of Sports Medicine, July 2006.

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