Anabolic/androgenic steroids may elevate blood pressure. Studies of bodybuilders taking these drugs in supratherapeutic doses have demonstrated increases in both systolic and diastolic blood pressure readings. Another study measured the average blood pressure reading in a group of steroid users to be 140/85, which was compared to 125/80 in weight lifting controls not taking steroids.
Hypertension, or consistently high blood pressure at or above 140/90 for either systolic or diastolic measures, has been reported in steroid users, although in most cases the elevations are more modest. Increased blood pressure may be caused by a number of factors, including increased water retention, increased vascular stiffness, and increased hematocrit. Aromatizing or highly estrogenic steroids tend to cause the greatest influences over blood pressure, although elevations cannot be excluded with non-estrogenic anabolic/androgenic steroids. Blood pressure tends to normalize once anabolic/androgenic steroids have been discontinued.
Wlliam Llewellyn (2011) - Anabolics