https://www.mja.com.au/journal/2015/203/5/steroid-induced-cardiomyopathy
"The patient was a successful bodybuilder and strongman. Over the past 12 months, he had taken testosterone 1.5 g per week, trenbolone 500 mg per week, methandrostenolone 40 mg daily, anastrozole 0.5 mg daily and naproxen 1.1 g daily in preparation for a national championship competition. The products were obtained through other users at the gym where the patient trained. He had ceased all the above supplements about 6 weeks before his admission. He was 141 kg at the time of presentation."
"Cardiomyopathy, including ventricular hypertrophy and dilatation, is a complication of anabolic steroid use that has previously been described.3,4 Anabolic steroids are thought to cause changes in heart muscle structure through their effect on androgen receptors expressed on cardiac myocytes.3" Our case highlights an interesting presentation of a dilated cardiomyopathy with acute decompensated heart failure 6 weeks after cessation of anabolic steroids in a patient who had performed physically at an elite level only 2 weeks before admission. Further inhospital decompensation may have been precipitated by the acute effect of β-blocker therapy on cardiac output in this context, reducing the heart rate when stroke volume was extremely low. Definitive management involved cessation of the offending agents, exclusion of other reversible causes of heart failure, and initiation of conventional heart failure therapy. Awareness of the harmful cardiac effects of anabolic steroid use must be promoted within the medical profession and among potential users so that such cases can be prevented."
Looks like this study took place in Australia.