Obviously take from this what you will since it’s rats haha. But I thought you all would find this interesting since we are usually very wary of trens cardiotoxic component.
Obviously tren is terrible for mental health, but perhaps it’s not as bad as we thought for the heart?
academic.oup.com
Personal anecdote for me… the worst my RHR ever was was on tren the only time I ran it at 300mg enanthate. However, I wasn’t doing cardio at the time like a dumbass so can’t say too much.
I am going to quote here from the originally thread I found this in on another forum: “In all the rats given supraphysiological doses of testosterone, they all had widespread fibrosis of the heart and left ventricular hypertrophy. Now the tren treated group, only 1 rat had fibrosis, that was limited and not widespread. LVH was similar compared to the tren and test groups.”
Obviously tren is terrible for mental health, but perhaps it’s not as bad as we thought for the heart?

Trenbolone Improves Cardiometabolic Risk Factors and Myocardial Tolerance to Ischemia-Reperfusion in Male Rats With Testosterone-Deficient Metabolic Syndrome
Abstract. The increasing prevalence of obesity adds another dimension to the pathophysiology of testosterone (TEST) deficiency (TD) and potentially impairs the

Personal anecdote for me… the worst my RHR ever was was on tren the only time I ran it at 300mg enanthate. However, I wasn’t doing cardio at the time like a dumbass so can’t say too much.
I am going to quote here from the originally thread I found this in on another forum: “In all the rats given supraphysiological doses of testosterone, they all had widespread fibrosis of the heart and left ventricular hypertrophy. Now the tren treated group, only 1 rat had fibrosis, that was limited and not widespread. LVH was similar compared to the tren and test groups.”