Many people use anabolic steroids to build muscle and improve their physical appearance. These drugs are especially popular among bodybuilders, athletes, and some young adults who want to gain muscle quickly.
Social media platforms have also helped increase interest in bodybuilding and fitness, sometimes encouraging the use of performance-enhancing substances.
However, a new study suggests that anabolic steroids may come with a serious health risk. Researchers from the University of Birmingham and several research centers in Germany have found evidence that steroid use may increase the risk of developing dangerous heart rhythm problems, particularly in people who are already vulnerable because of their genes.
The study focused on a heart condition called atrial fibrillation. Atrial fibrillation is the most common type of abnormal heart rhythm.
It occurs when the upper chambers of the heart, known as the atria, beat irregularly and out of sync with the lower chambers. This can cause symptoms such as a rapid heartbeat, dizziness, shortness of breath, fatigue, and chest discomfort.
In some cases, atrial fibrillation can increase the risk of stroke, heart failure, and other serious complications. Although the condition is more common in older adults, it can also affect younger people, especially those with underlying heart disease.
The researchers investigated the effects of anabolic steroids on a heart disorder called arrhythmogenic right ventricular cardiomyopathy, or ARVC.
ARVC is an inherited disease that affects the structure of heart muscle cells. In people with ARVC, the connections between heart cells become weakened, making it easier for dangerous heart rhythms to develop.
The disease is known to affect men more often than women, and previous research has suggested that male hormones may play a role in its progression.
The study was led by Dr. Laura Sommerfeld from UKE Hamburg. The researchers examined how anabolic steroids influence the electrical activity of the heart in individuals who may already be at risk because of ARVC-related genetic changes.
Their findings were concerning. The team discovered that as little as six weeks of anabolic steroid use could disrupt the heart’s normal electrical signaling system. These changes were particularly noticeable in the atria, the upper chambers of the heart where atrial fibrillation begins.
When the electrical signals become disorganized, the heart may lose its normal rhythm and start beating irregularly. This can increase the likelihood of developing atrial fibrillation and other potentially dangerous arrhythmias.
The researchers found that anabolic steroids appeared to worsen the effects of ARVC. For people who already have a genetic tendency toward heart disease, steroid use may further increase the risk of serious heart rhythm disturbances.
Professor Larissa Fabritz, one of the senior researchers involved in the study, explained that elevated testosterone levels can worsen certain forms of heart muscle disease. Since anabolic steroids are synthetic versions of testosterone, they can significantly increase hormone levels in the body.
This increase may place additional stress on the heart and contribute to electrical instability within heart tissue. As a result, people who use anabolic steroids may unknowingly increase their risk of developing life-threatening rhythm disorders.
The findings are especially relevant for younger men who may believe that anabolic steroids are a relatively safe shortcut to building muscle. While the physical changes can be noticeable in a short period of time, the hidden effects on the heart may be far more serious and long-lasting.
The researchers warn that many people who use steroids may not know whether they carry inherited genetic changes linked to heart disease. Someone with an undiagnosed condition such as ARVC could face a much greater risk than they realize.
The study also highlights a broader issue involving supplements and performance-enhancing substances. Many products marketed for fitness, bodybuilding, or health may have unexpected effects on the cardiovascular system.
Even some herbal supplements that are widely viewed as natural and safe have been linked to changes in heart rhythm in certain individuals.
At the same time, research continues to show that healthy lifestyle choices can support heart health. A balanced diet, regular physical activity, good sleep habits, and avoiding harmful substances remain among the most effective ways to reduce cardiovascular risk.
The researchers hope their findings will help raise awareness about the potential dangers of anabolic steroid use. They also hope the study will encourage people to seek medical advice before taking substances that may affect hormone levels or heart function.
While more research is needed to fully understand the long-term effects of anabolic steroids on heart rhythm, the current evidence suggests that the risks should not be ignored. What may appear to be a simple way to gain muscle could potentially increase the risk of serious and even life-threatening heart problems.
For people considering anabolic steroids, the message from the study is clear: building muscle should never come at the expense of heart health. Understanding the risks and making informed decisions can help protect both physical fitness and long-term well-being.
If you care about heart health, please read studies that yogurt may help lower the death risks in heart disease, and coconut sugar could help reduce artery stiffness.
For more information about health, please see recent studies that Vitamin D deficiency can increase heart disease risk, and results showing vitamin B6 linked to lower death risk in heart disease.
The study was published in The Journal of Physiology.
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