<br> Possible effects of these alterations in the heart are hypertension, cardiac arrhythmias, congestive heart failure, heart attacks, and sudden cardiac death. These changes are also seen in non-drug-using athletes, but steroid use may accelerate this process. However, both the connection between changes in the structure of the left ventricle and decreased cardiac function, as well as the connection to steroid use have been disputed. Depending on the length of drug use, there is a chance that the immune system can be damaged. of these side-effects are dose-dependent, the most common being elevated blood pressure, especially in those with pre-existing hypertension. In addition to morphological changes of the heart which may have a permanent adverse effect on cardi<br><br>