Its quite simple actually,
Why does androgen use shorten lifespan. It is the same process that high blood pressure increases stroke and heart attack.
It is the thickening of the muscle of the arteries! Most practicioners know that what causes these maladies is a direct result of thickening of the muscle that involves the arteries of the cardiovascular system.
High blood pressure is a sheer mechanical force against the inner linings of the arterial system. Steroids in and of themselves increase the blood pressure through the angiotensin renal system.
What the double effect of these though, is not only does it increase the pressure in the system which increases risk of stroke and heart attack by a minimum of 3-fold. Is that it also aggravates the muscle building effects of the tension in the system.
The arteries are muscular, increase that muscle. Then you increase the risk of bursting and/or rupture of small plaques that build in there. The plaque in arteries has the consistency of toothpaaste. Those can rupture especially with undue stress. The thickening of the artery muscle as well makes it more brittle and prone to these issues.
If one were to be genetically incline to a heart attack, even if they controlled for blood pressure. The risks of 'building areterial muscle" would make it a reason not to engage in an experiment.
The disease process is fairly clear as far as the thickening of arterial muscle and heart attacks as in hypertensive heart disease. The idea one could escape it by simply controlling blood pressure is not well stateed, In fact, the evidence points to the fact that the thickening of arterial walls is more suggestive of stroke and heart attack than blood preessure alone.
That most steroid users fail to control their blood pressure causes the disease process of atherosclerosis to accelerate, but regardless if they do. The evidence is that it would be fruitless. As they tend to develop coronary arterial disease at an accelerated rate regardless if they 'control' for the side effects usually regarded as risk factors.
All evidence points to, if statistically taken into analysis, that steroid use is a strong indicator of eartly cardiac mortality, morbidity and disease regardless if risk factors are controlled. Genetic links if someone has had a heart attack prior to age 55 in the family will exponentiate that risk.
It really depends on if the person has a reason to use steroids, be it that they have low self-esteem or if they have a family whom they love. People will make that decision. But it is pretty clear that anabolic steroid will affect the anatomy of the arteriovascular system. More muscle in the artery system is directly correlated, directly correlate AGAIN with more stroke and heart attack..
Taking a muscle building agent, will decrease your life as an epidemiological study can prove