Steroids & Risk
When bodybuilders weigh up the risks of steroids, they tend to think about the visible ones — acne, hair, gyno. The most serious risk is the one you can't see: what anabolic steroids do to the cardiovascular system.
Steroid use is consistently associated with higher LDL ("bad" cholesterol) and lower HDL ("good"). That combination accelerates the kind of arterial plaque buildup that underlies heart attacks and strokes.
Many users see elevated blood pressure, which strains the heart and vessels over time.
Studies of long-term users have found structural changes — including thickening of the left ventricle (the heart's main pumping chamber) and impaired function. The heart is a muscle, and supraphysiological androgens affect it too, not always for the better. Thicker blood (raised haematocrit) can add clotting risk on top.
Unlike acne or gyno, you can't see it in the mirror, and it often produces no symptoms until it's advanced. A man can look his absolute best while his cardiovascular risk is quietly climbing. That mismatch — peak appearance, declining internal health — is exactly what makes it dangerous. Higher doses, longer duration, oral compounds and stacking all make it worse.
Medically supervised TRT in appropriately selected men is a different, more reassuring risk conversation — a large recent trial found no increased major cardiac events. That is not the same as supraphysiological bodybuilding use, which is where the serious concern sits. If you're using or considering anabolic steroids, the heart is the reason this needs real medical monitoring — not a forum protocol.
One of the most consistent findings in anabolic steroid users is an unfavourable change in blood lipids: LDL ("bad") cholesterol rises and HDL ("good") cholesterol can fall sharply — sometimes dramatically. HDL is protective; it helps clear cholesterol from artery walls. Lowering it while raising LDL accelerates atherosclerosis, the slow build-up of plaque that underlies most heart attacks and strokes. The unsettling part is that this happens silently, over months and years, while the mirror tells a flattering story.
Many users develop elevated blood pressure, which forces the heart to work harder and damages vessels over time. Beyond that, studies of long-term users have found structural changes to the heart — notably thickening of the left ventricle, the main pumping chamber — and reduced pumping efficiency. The heart is a muscle, and supraphysiological androgens act on it just as they act on skeletal muscle, but the consequences here are anything but desirable.
Androgens can raise haematocrit — the concentration of red blood cells — making blood thicker and harder to pump. Thicker blood raises the risk of clots, which can trigger heart attacks or strokes. This is one of the markers a doctor monitors closely even in medical testosterone use, and one that unsupervised users have no visibility on at all.
It's important to separate supraphysiological abuse from medical TRT. The large TRAVERSE trial (New England Journal of Medicine, 2023) found that testosterone therapy in men with diagnosed low testosterone and high cardiovascular risk was not associated with an increase in major adverse cardiac events compared with placebo — reassuring for appropriately prescribed, monitored TRT. That is a fundamentally different scenario from pushing levels far above normal without oversight, which is where the serious cardiovascular concern lies. (Earlier meta-analyses of mixed trials were more cautious, which is part of why medical supervision matters.)
If a man is using — or on medical TRT — the heart is the reason bloodwork isn't optional. At minimum that means tracking a full lipid panel, blood pressure, and haematocrit, ideally with a doctor who can act on the numbers. The takeaway isn't fear for its own sake; it's that the most dangerous effect of these drugs is the one you can't see, so the only way to manage it is to measure it.
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