Obesity.  Obesity and erectile dysfunction in men has unfortunately become an epidemic in this country, affecting children, teenagers, young adults and up.  This disease tends to follow men and women through adulthood, if not addressed.  Obesity leads to heart disease, diabetes and high blood pressure.  This trifecta results in the three main medical causes of erectile dysfunction.
For most men, improving erectile dysfunction means improving blood flow to the penis. Immediate relief often requires medications that increases nitric oxide (NO) in the blood vessels of the penis. NO causes the smooth muscle cells in the blood vessels of the penis to stretch, which increases the flow of blood. NO also keeps the smooth muscle cells younger and helps prevent and even reverse hardening and narrowing of the blood vessels over time. Proper diet (see more below) and regular exercise are key because both can boost NO.
Pornography addiction or dependence is a potential cause for ED that many men fail to consider. If you spend a great deal of time watching and masturbating to pornography, it could cause you to develop unrealistic expectations about sex or about your sexual partners. When this happens, your brain becomes “trained” to not only expect but, in a way, to need that kind of experience in order to achieve arousal and climax. Researchers have actually studied this effect and have given the condition its own name – pornography-induced erectile dysfunction (PIED).
While self-esteem can be affected by the perceptions of others, it is largely how you feel about yourself. If you have a negative view of yourself and your abilities, it is going to color your experience and actions on a daily basis. Many people with low self-esteem get so caught up in their own perception of themselves, that they begin to project it onto others. For example, a man with low self-esteem might believe that he is not capable of satisfying a woman and, as a result, he becomes unable to perform in the bedroom. Low self-esteem can also be a sign of other psychological issues such as depression.  
Alcohol consumption is a common behavior in social circumstances worldwide. Epidemiological studies have suggested that moderate alcohol consumption reduces cardiovascular morbidity and mortality. The cardiovascular protective effects of alcohol may be attributed to its antioxidant, vasorelaxant, and antithrombotic properties, elevation of high-density lipoprotein or increase of nitric oxide production. Erectile dysfunction (ED) is a harbinger of cardiovascular diseases. Most epidemiological studies have also found that alcohol consumption, like its relationship with coronary artery disease, is related to ED in a J-shaped manner, with moderate consumption conferring the highest protection and higher consumption less benefits. In epidemio-logical studies, it is difficult to distinguish the ethanol effects from those of associated confounding factors. Meanwhile, long-term alcohol users, especially in those with alcohol liver disease, are highly associated with ED. More research is needed to investigate the true effects of alcohol consumption on cardiovascular diseases or ED.
The penis contains three cylinders, the two corpora cavernosa, which are on the top of the penis (see figure 1 below). These two cylinders are involved in erections. The third cylinder contains the urethra, the tube that the urine and ejaculate passes through, runs along the underside of the penis. The corpus spongiosum surrounds the urethra. Spongy tissue that has muscles, fibrous tissues, veins, and arteries within it makes up the corpora cavernosa. The inside of the corpora cavernosa is like a sponge, with potential spaces that can fill with blood and distend (known as sinusoids). A layer of tissue that is like Saran Wrap, called the tunica albuginea, surrounds the corpora. Veins located just under the tunica albuginea drain blood out of the penis.
Venous leak occurs when veins are unable to keep enough blood in the penis for a suitable erection.  As noted above, a firm erection results when blood flows into the penis.  Veins normally constrict to keep the blood inside until the man ejaculates.  A venous leak prevents blood from staying in the penis.  Instead, blood leaks back into the body and the erection fails to stay rigid.

Prostaglandins (alprostadil): Alprostadil can be injected into the penis or inserted as a pellet through the urethra. It causes an erection without sexual stimulation that usually lasts about 60 minutes. The danger with this method is that too high a dose can cause priapism, an erection that won't go away. This condition requires immediate medical attention as it can cause serious bruising, bleeding, pain and permanent penile damage. Once the doctor is sure of the right dose, the man can self-inject at home.

medicines called alpha-blockers such as Hytrin (terazosin
HCl), Flomax (tamsulosin HCl), Cardura (doxazosin
mesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl),
 Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin).
Alpha-blockers are sometimes prescribed for prostate
problems or high blood pressure. In some patients, the use
of Sildenafil with alpha-blockers can lead to a drop in blood pressure or to fainting
The common PDE5 inhibitor drugs approved in the United States are sildenafil (Viagra), vardenafil (Levitra and Staxyn, the generic form), tadalafil (Cialis), or avanafil (Stendra). All of the currently approved PDE5 inhibitors work in the same way. They differ in the number of available doses, how quickly they work and last in your system, the dosing, and to some extent in the side effects. However, they generally share the same indications and contraindications. Currently, tadalafil is the only medication that patients can take on a daily basis and is approved for the treatment of both ED and BPH (benign enlargement of the prostate).

"One of the reasons erectile dysfunction increases with age is that the diseases that lead to it also increase with age," notes Dr. Feloney. Evaluating the causes of erectile dysfunction starts with your doctor taking a good health history and giving you a physical exam. Common medical issues that can lead to erectile dysfunction include diabetes, high blood pressure, hardening of the arteries, low testosterone, and neurological disease. Talk to your doctor about better managing these health conditions.
It would be convenient if a fairy dickmother flew from the sky and told you this would be the drink that renders you flaccid, but when it comes to figuring out your limit, you’re on your own. There’s no hard and fast rule as to how much will actually affect you, either; Dr Mills notes that some men may be able to drink a lot and get erections, as everybody’s threshold is different.
Currently, placement of a penile prosthesis is the most common surgical procedure performed for erectile dysfunction. Penile prosthesis placement is typically reserved for men who have tried and failed (either from efficacy or tolerability) or have contraindications to other forms of therapy including PDE5 inhibitors, intraurethral alprostadil, and injection therapy.
Alprostadil should not be used in men at higher risk for priapism (erection lasting longer than six hours) including men with sickle cell anemia, thrombocytopenia (low platelet count), polycythemia (increased red blood cell count), multiple myeloma (a cancer of the white blood cells), and is contraindicated in men prone to venous thrombosis (blood clots in the veins) or hyperviscosity syndrome who are at increased risk for priapism.
Relationship problems often complicate erectile dysfunction. Improving your relationship may be part of the solution. It may be a good idea to get counseling together from a sex therapist, marriage counselor, or a medical specialist. "I almost always see couples together to discuss erectile dysfunction. It often turns out that both partners have issues regarding the sexual relationship and once they are out in the open, couples can work together on a more satisfying sexual experience," says Feloney.
Although ED can become a permanent condition, this typically isn’t the case for men who experience occasional erectile difficulties. If you have diabetes, you may still be able to overcome ED through a lifestyle that includes sufficient sleep, no smoking, and stress reduction. ED medications are usually well-tolerated, and can be used for many years to help overcome any ED problems.

Where alcohol may succeed as an aphrodisiac in getting people “in the mood” it may fail in execution. During an erection, the penis fills with blood then the vessels close, preventing backflow, so that the penis remains erect. In the short term, overconsumption of alcohol causes the blood vessels in the penis to expand, allowing for more blood flow, but prevents those vessels from closing. As a result, the penis may become erect but not remain so, as there is nothing to prevent backflow.
Additional information to obtain includes a psychosocial and cultural history to assess past and present relationships, emotional or professional stressors, current and previous psychological/behavioral diagnoses and treatments, educational level and employment status, and location of domicile. A methodical medical history should be obtained to identify medical conditions that might be contributing to the patient’s ED. A thorough physical examination should be performed on all new patients with emphasis on the cardiovascular, genital, endocrine, and neurologic systems. On physical examination in a man with hypertonic cavernous smooth muscle, the penis may initially be contracted and tender to palpation. As the exam proceeds and the patient becomes less anxious, the penile tissue will often noticeably relax.
“With the success of Viagra-type drugs, there has been a tendency to start all patients with ED on one of these drugs and not look much further for a medical cause. But we now know that ED may be an early warning for heart and blood vessel disease, so it is important to look for common risk factors. These include high blood pressure, diabetes, medications, smoking, drinking, and drugs,” said Dr. Wang.

Performance anxiety can be another cause of impotence. If a person wasn’t able to achieve an erection in the past, he may fear he won’t be able to achieve an erection in the future. A person may also find he can’t achieve an erection with a certain partner. Someone with ED related to performance anxiety may be able to have full erections when masturbating or when sleeping, yet he isn’t able to maintain an erection during intercourse.
In rare cases, the drug Viagra ® can cause blue-green shading to vision that lasts for a short time. In rare cases, the drug Cialis® can cause or increase back pain or aching muscles in the back. In most cases, the side effects are linked to PDE5 inhibitor effects on other tissues in the body, meaning they are working to increase blood flow to your penis and at the same time impacting other vascular tissues in your body. These are not ‘allergic reactions'.
"Erectile dysfunction can be a very serious issue because it's a marker of underlying cardiovascular disease, and it often occurs before heart conditions become apparent. Therefore, men should consider improving their weight and overall nutrition, exercise more, drink less alcohol and have a better night's sleep, as well as address risk factors such as diabetes, high blood pressure and cholesterol.

Professor Michael Holmes, of the Nuffield Department of Population Health at the University of Oxford, one of the study’s lead authors, said: “Our finding is important as diabetes is preventable and indeed one can now achieve ‘remission’ from diabetes with weight loss, as illustrated in recent clinical trials. This goes beyond finding a genetic link to erectile dysfunction to a message that is of widespread relevance to the general public, especially considering the burgeoning prevalence of diabetes.”
Erectile Dysfunction is usually a condition faced by men over the age of 50, but based on the large number of inquiries on blogs and forums from young men dealing with the symptoms of impotence and over 500 hits to my article  titled “Can Men in Their 20’s and 30’s Have Erectile Dysfunction,”  this demonstrates erectile dysfunction at all ages is a serious issue, and particularly erection problems in young men is a key issue these days. If you are in this age group and are dealing with erectile dysfunction, then you have come to the right place to learn about the issues of erectile dysfunction in young  men.
Erectile dysfunction started to become a household term after scientists discovered a drug to treat it. Nowadays, as anyone who watches TV can attest, there are several different medications for ED. Fifty to 70 percent of men with type 1 or type 2 diabetes respond to a class of drugs—including sildenafil (Viagra), var­denafil hydrochloride (Levitra), and tadalafil (Cialis)—called phosphodiesterase-5 inhibitors.
A study published in May 2014 in The Journal of Sexual Medicine found that some men can reverse erectile dysfunction with healthy lifestyle changes, such as exercise, weight loss, a varied diet, and good sleep. The Australian researchers also showed that even if erectile dysfunction medication is required, it's likely to be more effective if you implement these healthy lifestyle changes.

Ganio, M. S., Armstrong, L. E., Casa, D. J., & McDermott, B. P. (2011, November 28). Mild dehydration impairs cognitive performance and mood of men [Abstract]. British Journal of Nutrition, 106(10), 1535–1543. https://www.cambridge.org/core/journals/british-journal-of-nutrition/article/mild-dehydration-impairs-cognitive-performance-and-mood-of-men/3388AB36B8DF73E844C9AD19271A75BF#


Penile Injection Medication: This is just what it sounds like. Injected at home directly into the penis, the medication alprostadil produces erection by relaxing certain muscles, increasing blood flow into the penis and restricting outflow. Although some sources report an 80 percent success rate, the therapy has disadvantages, such as risks of infection, pain, and scarring—fibrosis—in the penis, and it may also cause priapism. A popular version of this medication is Upjohn Corporation’s Caverject. The MUSE System, by VIVUS, involves the same medicine (a pellet of alprostadil) applied with an eye-dropper-like applicator, directly into the urethra.
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