Anabolic steroid use can affect blood pressure, cholesterol, heart muscle and circulation. Studies also link nonmedical use with serious cardiovascular events. Feeling strong or having a normal blood test does not establish that your heart is healthy. Symptoms, exposure history and appropriate medical assessment determine the next step.
Persistent chest discomfort, severe breathing difficulty or collapse with abnormal responsiveness needs emergency help. Do not wait for a routine steroid monitoring appointment.
What cardiovascular findings mean during anabolic steroid use
Cardiovascular health includes the heart’s pumping and electrical functions and the vessels carrying blood around the body. This page covers their connection with anabolic steroids. The anabolic steroid side effects overview connects these concerns with other organ systems.
| Finding | What it can show | What it cannot establish alone |
|---|---|---|
| Blood pressure during anabolic steroid use | Pressure against artery walls | The condition of every coronary artery or heart muscle cell |
| Cholesterol changes during anabolic steroid use | A change in blood lipids associated with vascular risk | A diagnosis of a blocked artery |
| Heart imaging after anabolic steroid exposure | Selected features of heart structure and function | A guarantee against future cardiac events |
| A high hematocrit result during anabolic steroid use | An increased proportion of blood occupied by red cells | A diagnosis of a blood clot |
A blood result, a scan abnormality and a hospital diagnosis are different outcomes. Read research numbers with that distinction in mind: an average change in a scan measurement is not the percentage of people who will have a heart attack.
When symptoms need attention
If palpitations with warning symptoms have stopped, arrange an urgent appointment. Breathlessness while lying down or during everyday activity, coughing up frothy pink phlegm, or sudden weight gain also warrants urgent assessment. Repeated brief palpitations while otherwise well, unexplained swelling or a faint from which you fully recovered still need a medical review. Use the emergency pathway if the emergency signs above occur. These distinctions follow current NHS palpitations advice and heart failure symptom advice.
How anabolic steroids can affect the heart and blood vessels
Blood pressure
Higher pressure increases the load the heart pumps against. A prospective study of 100 men found increases in average blood pressure during anabolic steroid exposure, alongside changes in lipids and hematocrit. Group averages returned toward baseline after exposure ended; this does not tell an individual that a high reading can be ignored. The study examined cardiovascular markers, not a reliable personal event forecast.
Cholesterol and artery disease
Anabolic steroids can lower high density lipoprotein (HDL) cholesterol and raise low density lipoprotein (LDL) cholesterol. LDL contributes to plaque accumulation in artery walls. HDL is considered in overall risk assessment, but is not a treatment target on its own. A lipid panel does not directly image that plaque. See anabolic steroids and cholesterol for interpretation of the lipid pathway.
Heart muscle and pumping
Androgens act on receptors in heart muscle as well as skeletal muscle. Proposed injury pathways include altered growth signals and fibrosis, meaning increased scar tissue. A thicker heart wall does not necessarily pump more effectively: contraction and relaxation can both be impaired. Human imaging supports structural associations, while parts of the molecular explanation come from experimental research.
Coronary blood supply
Plaque is one concern; changes in vascular tone and clotting are other proposed routes to impaired coronary blood flow. A coronary artery supplies the heart muscle itself. Reduced supply can injure that muscle, and the cause of chest pain cannot be settled from its timing within a steroid cycle.
Red cells and clotting
Anabolic steroids can stimulate red cell production. Hematocrit describes their share of blood volume; fluid balance also affects the result. It is neither a clot test nor a reason to arrange your own blood removal. Clot assessment depends on symptoms and the clinical pathway. The hematocrit and blood clot page separates these questions.
Heart rhythm
Changes in muscle structure and electrical conduction may contribute to abnormal rhythms. Other substances, thyroid disease and electrolyte disturbances can also affect rhythm. Palpitations describe a sensation, not its cause. A clinician may need to record the rhythm rather than infer it from how fast or forcefully the heartbeat feels.
The 2023 cardiomyopathy review discusses proposed mechanisms; the prospective study of blood pressure, lipids and red cells provides human marker data. These sources do not establish a safe compound, route or combination.
What the cardiovascular studies show
Clinical events in a Danish cohort
A 2025 Danish registry study compared 1,189 men sanctioned through a fitness antidoping programme with 59,450 matched population controls over an average of 11 years. Anabolic steroid exposure was associated with higher rates of heart attack, coronary revascularisation, venous blood clots, arrhythmia, cardiomyopathy and heart failure. This was an observational study of a selected male population. Differences in other exposures and health characteristics complicate causal interpretation; the results are not an individual probability. Stroke and cardiac arrest events were too few for the study to report estimates.
Heart structure and function across imaging studies
A review published in its 2026 journal issue combined 35 studies involving 2,000 men: 834 trained anabolic steroid users, 754 trained nonusers and 412 sedentary controls. Compared with trained nonusers, users had less favourable average pumping and strain measurements and greater wall thickness and heart mass. These are imaging outcomes. The review does not measure the proportion who subsequently developed heart failure, and its male study population limits direct application to other groups.
Coronary plaque and longer exposure
A 2017 study of 140 male weightlifters compared 86 men reporting at least two years of anabolic steroid exposure with 54 nonusers. Heart ultrasound and coronary CT found poorer average ventricular function and more coronary plaque in the exposed group. Greater cumulative exposure was associated with plaque burden. This was a cross sectional comparison, not proof that every participant developed disease because of steroids. Current and former users were different people, so their comparison is not a recovery timeline.
Together, these studies address different pieces of the problem. Their findings support taking cardiovascular concerns seriously, but they do not provide a personalised calculator that accounts for an unknown product, every coexposure or an individual’s medical history.
Why performance and symptoms cannot clear the heart
Some cardiovascular conditions have no symptoms before diagnosis. Being able to lift heavy weights, maintain a low resting pulse or complete a familiar workout does not substitute for assessment. In the small prospective heart imaging study discussed below, measurable changes occurred without reported breathlessness or ankle swelling at the end of exposure.
Report a new fall in exercise tolerance, unusual fatigue, breathlessness, swelling or recurrent palpitations. These symptoms can have several causes; heart failure, anemia, thyroid problems, infection and lung disease require different investigations. Anxiety can cause chest symptoms too, but assigning that explanation at home can delay assessment. Record when symptoms started, their duration and their relation to activity without deliberately provoking them.
Tests and cardiology assessment
A useful history includes the names of all products, routes, approximate amounts, start and stop dates, years of prior exposure and the last use. Include stimulants, growth hormone, thyroid products, diuretics, alcohol, nicotine, supplements and prescribed medicines. Tell the clinician when the product contents or amounts are uncertain. Photos and packaging can help identify what was sold, but do not prove what it contained.
The clinician may assess blood pressure, pulse, examination findings, previous results and personal or family heart disease. Blood tests can include a full blood count, lipids and selected kidney, liver, glucose or electrolyte tests. Test choice depends on the presentation; this is not a universal shopping list or a fixed home schedule. Blood tests during anabolic steroid use explains the wider laboratory context.
Electrical recording
An electrocardiogram (ECG) records the heart’s electrical activity. A resting recording and a portable recording over time answer different questions, so intermittent symptoms may require a different approach from symptoms present in the clinic. An ECG is not an ultrasound image of heart muscle. The NHS ECG information describes the available forms and how results are discussed.
Heart imaging
An echocardiogram uses ultrasound to assess the heart. Depending on the question, clinicians examine chamber size, wall thickness, valves and pumping or relaxation. An abnormal finding requires interpretation in the context of training, blood pressure and other disease; it should not automatically be labelled normal athletic adaptation. Echocardiography information explains the test and followup.
Selected patients may need cardiac magnetic resonance imaging, coronary CT or other investigations. These are not interchangeable scans, and not every steroid user needs every test. A cardiologist decides which question remains unanswered and how the result could change care. Coronary disease assessment uses history and further testing rather than a cholesterol result alone.
Ask: “What did this result show, what remains uncertain, and what would make you arrange another test?” A normal result should be discussed within its limits, rather than treated as permission to continue exposure. Agree who will review the report and how you will receive it.
Recovery and followup
The HAARLEM heart imaging study assessed 31 men before and at the end of a self selected anabolic steroid cycle. Heart mass increased and some measures of pumping and relaxation worsened. Only 25 had recovery scans: four had restarted exposure and two missed followup. Among those assessed, the reported changes returned to baseline after a median of eight months from the cycle’s end. This selected observation does not promise full recovery, establish a safe waiting period or show that existing coronary plaque disappears.
Recovery of a laboratory marker, an imaging measurement and day to day symptoms are separate outcomes. Persistent cardiomyopathy or heart failure can require ongoing specialist treatment. Clinicians may repeat assessment to follow the condition rather than assume that stopping exposure resolved every abnormality. Read anabolic steroid cardiomyopathy for the heart muscle pathway.
Stopping nonmedical anabolic steroids can bring endocrine and psychological symptoms that make change difficult. A coordinated plan can involve primary care, cardiology, endocrinology and mental health or substance use services. Do not substitute an online hormone protocol for that care or change prescribed testosterone on your own. Tell the prescriber about the cardiovascular concern and all additional products.
Risk factors and practical care planning
Smoking, high blood pressure, diabetes, high cholesterol and a family history of early heart disease add useful context to assessment. Sleep apnea, stimulant use and other health conditions should also be discussed. Treating one factor does not prove that continued anabolic steroid exposure is safe.
If home blood pressure monitoring is recommended, ask about a suitable monitor, cuff size, technique and how to report readings. A measurement taken with an unsuitable cuff or without following instructions may mislead. Follow the agreed reporting plan instead of repeatedly measuring while delaying care for symptoms. The blood pressure monitoring page covers that process.
Do not start aspirin, anticoagulants, diuretics or other cardiac medicines as a workaround for steroid exposure. These treatments have specific indications and potential harms; treatment for diagnosed disease belongs with the clinical team. If a heart condition is found, ask what activity is appropriate and if cardiac rehabilitation or a supervised exercise plan is needed.
- What problem are we assessing: pressure, rhythm, heart muscle, circulation or more than one?
- Which tests or referrals are needed now, and who will arrange them?
- Which symptoms should change the urgency before the next appointment?
- How will results and any repeat assessment be communicated?
- Who can help with stopping, withdrawal symptoms or difficulty avoiding further use?
For help preparing the conversation, use talking to a doctor about anabolic steroid use. The care and support contacts page lists routes in the UK, USA, Canada and Australia.