Guess he's pretty smart.............
Are low testosterone levels bad for your heart?
On the contrary, low testosterone levels (especially free testosterone) may increase the risk of atherosclerosis. Studies show that testosterone may actually promote the health of the cells lining the blood vessels and reduce risk of the disease [5, 6, 7, 8, 9].
Low testosterone levels
Men with low testosterone levels have more abdominal fat, and their endothelial cells don't function as well. They're also at greater risk of insulin resistance [4].
This suggests that having normal testosterone levels (rather than low testosterone levels) could actually be good for you.
In men with low testosterone levels, administration of supplemental testerone increases blood flow to areas such as the brain and sex organs. In one Italian study, treatment with transdermal testosterone improved the erectile response to viagra [1].
So, how are low testosterone levels and blood flow linked?
Your heart pumps blood through tubes called blood vessels. These are lined with endothelial cells that secrete a chemical called nitric oxide. Nitric oxide opens blood vessels and helps to stimulate the flow of blood.
Low testosterone levels may be one reason why endothelial cells stop working properly. This leads to poor blood flow. You'll have trouble getting erections during sex. Blood flow to the muscles during exercise will also be reduced.
Healthy endothelial cells, on the other hand, promote the delivery of blood to your muscles during exercise. Improved blood flow to the brain means you can think clearly and quickly. Sexual arousal and performance is also improved.
In spite of the widespread belief that testosterone supplementation increases the risk of heart disease, evidence to support this is lacking.
Although large doses of testosterone, such as those used by athletes and recreational body builders, decrease high-density lipoprotein (HDL) cholesterol concentrations, replacement doses of testosterone have only a modest effect on HDL in placebo-controlled trials [10].
In fact, according to a review by the preeminent androgen physiologist Dr. Shalendar Bhasin, "In epidemiological studies, serum total and free testosterone concentrations have been inversely correlated with intra-abdominal fat mass, risk of coronary artery disease and type II diabetes. Testosterone administration to middle-aged men is associated with decreased visceral fat and glucose concentrations and increased insulin sensitivity. Testosterone infusion increases coronary blood flow. Similarly, testosterone replacement retards atherogenesis in experimental models of atherosclerosis."