"Studies have suggested that low circulating concentrations of testosterone might increase the risk of ischaemic cardiovascular disease in older men and women by promoting maladaptive vascular remodeling and atherosclerosis."
Thus, optimizing testosterone levels may have cardiovascular health benefits. "Additional research suggests that testosterone shortens the heart-rate–corrected QT interval, improves glycemic control, induces vasodilation, is prothrombotic, and has anti-obesity effects, whereas associations with atherosclerosis and inflammation are less clear."