There are many factors that can lead to ED. “Psychological causes of erectile dysfunction in young men can include performance anxiety, guilt about sex in general, guilt about having sex with a particular partner, feelings of anger or resentment towards a partner, or simply finding a partner undesirable,” said Carole Lieberman, MD, a psychiatrist on the clinical faculty of the UCLA Neuropsychiatric Institute in Los Angeles.

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Erectile dysfunction in older men. Because erections primarily involve the blood vessels, it is not surprising that the most common causes in older men are conditions that block blood flow to the penis, such as atherosclerosis or diabetes. Another vascular cause may be a faulty vein, which lets blood drain too quickly from the penis. Other physical disorders, as well as hormonal imbalances and certain operations, may also result in erectile dysfunction.
"This triggers the release of a neurotransmitter called dopamine, and it sends a chemical message from the brain to the penis, causing an increase of blood flow to the penis. The blood vessels leading to the reproductive system then relax and this allows increased circulation in the genital area. When you aren't aroused, the blood vessels in your penis are only partially open. But when your brain sends messages to your penis that you are ready for sex, the vessels open and allow more blood to enter the area. Because of the increased blood flow, blood gets trapped in the penis, which makes the penis expand and causes an erection."
The best-selling author as Jack Grave of Ejaculation Guru is the natural researcher of health and also the creator of this sex guide. In his manual, he has well explained the need of every man which is required to be known and how they can get rid of the condition without any hassle and without even spending too much money on other useless products.
Erectile dysfunction is the inability to attain or maintain an erection adequate for the sexual satisfaction of both partners. At one time, doctors tended to blame ED on psychological problems or, with older men, on the normal aging process. Today, urologists say physical factors underlie perhaps 90% of cases of persistent erectile dysfunction in men older than 50.

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