Q: I have been told that Steroids are bad for the heart in that the heart is a muscle like any other and can grow in size whilst on a cycle. I was also told that Aerobic activity is bad whilst on a cycle as the heart is worked more, making it grow more. Is this true or pure fiction?

A: There is some truth to this, but only a little. The heart has been shown to possess androgen receptors, however as a muscle it does not respond in the same way skeletal muscle does. Your heart does not dramatically grow or shrink in the presence or absence of androgens; in fact androgens alter its size very little. I think the much bigger concern is the possible alterations in cholesterol values, which typically are very negative during steroid therapy. Here aerobics would be a good thing, as at least it helps support a healthier cardiovascular system. I think that although it is an important part of exercise, too often guys ignore aerobics work during steroid use in fear it will hinder muscle gains.

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