Sorry for long post!
Causes of ED:
Damage to nerves, arteries, smooth muscles, and fibrous tissues, often as a result of disease, is the most common cause of ED. Diseases?such as diabetes, kidney disease, chronic alcoholism, multiple sclerosis, atherosclerosis, vascular disease, and neurologic disease?account for about 70 percent of ED cases. Between 35 and 50 percent of men with diabetes experience ED.
Lifestyle choices that contribute to heart disease and vascular problems also raise the risk of erectile dysfunction. Smoking, being overweight, and avoiding exercise are possible causes of ED.
Also, surgery (especially radical prostate and bladder surgery for cancer) can injure nerves and arteries near the penis, causing ED. Injury to the penis, spinal cord, prostate, bladder, and pelvis can lead to ED by harming nerves, smooth muscles, arteries, and fibrous tissues of the corpora cavernosa.
In addition, many common medicines?blood pressure drugs, antihistamines, antidepressants, tranquilizers, appetite suppressants, and cimetidine (an ulcer drug)?can produce ED as a side effect.
Experts believe that psychological factors such as stress, anxiety, guilt, depression, low self-esteem, and fear of sexual failure cause 10 to 20 percent of ED cases. Men with a physical cause for ED frequently experience the same sort of psychological reactions (stress, anxiety, guilt, depression). Other possible causes are smoking, which affects blood flow in veins and arteries, and hormonal abnormalities, such as not enough testosterone.
As you see there are many possible causes with the least likely low testosterone. If your T-levels are extremely low it can cause ED. However, if it is within the normal the range, adding Testoserone will not help. In fact it can make the probelm worse! When you raise T-levels you also raise estrogen levels. Estrogen plays a major role in erections. Too much or too little and no erection! IF your porblem is hormone related, adding Testosterone without balancing and monitoring ALL the others involed will only lead to greater problems.
Good news....it is normal for most guys go through a period of time in their life where they have trouble getting it up. It is temporary and resovles itself on its own. Before you go much further with treatment please be aware that adding Testosterone can make the problem worse. First rule out physical damage/blood flow (ultrasound). Second look at your lifestyle/health. Any chnage is routine, sleep, weight or activity level can have an effect. Third look at what is going on in your life. If you are like most twenty somethings your life is a mess! School, work, bills, relationships, future, and SEX. You are no longer a carefree teen living under the care of your parents. Now you are on your own or about to be out there on your own and that can be stressful. Society has a new set of rule and exspectations for you.
If you still belive low Testosterone is your problem then take it upon yourself to push your Doctors to fine the cause, not just a quick fix. Testosterone replacement therapy in a young person who does not need it can cause alot of other problems that may or may not be fixed. (i.e., infertility, testicle atrophy, cardiovascular disease, baldness, make hormone depndent tumors grow faster, and more). Find the cause. Find an endocrinlogist!