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."
Failure to achieve an erection is not uncommon for most men and may be considered normal even if it happens as often as 20 percent of the time. There is a wide range of normal when it comes to sexual functioning and sexual relationships. "Generally if a couple feels comfortable with their sex life and they enjoy intimacy together, erectile dysfunction may not be much of an issue. But if erectile dysfunction is causing stress in a relationship, then help is available," says Feloney.
Men with a healthy lifestyle and no chronic disease had the lowest risk for erectile dysfunction; the greatest difference was seen for men aged 65-79. For instance, men who exercised at least three hours per week had a 30% lower risk for ED than those who exercised little. Obesity, smoking, and excessive TV watching were also associated with having a greater risk of erectile dysfunction.
Improve your nutrition. Certain foods, such as those that are fatty, fried, sugary, and processed, can result in decreased blood flow throughout your body and can contribute to a vascular form of erectile dysfunction. Increase your intake of fruits, vegetables, whole grains, and heart-healthy fats to improve your blood circulation and increase the amount of time you’re able to maintain an erection.
"Research shows that most erectile issues are a secondary cause to something psychological happening," he says. "This is when it's important to find a sex therapist. A lot of sex therapy begins with myth busting. We have a lot of myths about the meaning that comes from erectile issues. Most of those myths are simply untrue. Recognizing these myths can often decrease a lot of anxiety."

Watch whatever you eat: poor diet is also the reason for weak erections. As per the research, specific eating patterns cause heart attacks due to the restricted blood flow in coronary arteries which impede blood flow to the penis. Blood flow is also required for the penis to make it erect. Some of the diets also include vegetables and fruits that have fried, fatty and even processed foods that contributed to decreasing the blood circulation throughout the whole body. Anything which is terrible for man’s heart is also wrong for his penis and gaining an erection. One can learn how to keep an erection


"Stress and anxiety can adversely affect sexual performance and are common causes of erectile dysfunction,” warns Feloney. “Feelings of stress and anxiety can also lead to depression and a loss of interest in sex." It's important to get these feelings out in the open where you can deal with them. Issues that can lead to erectile dysfunction include fear from previous bad experiences with sex, family or work related stress, poor communication with your partner, and unrealistic goals and expectations.
“Although having sex at 70 is not the same as having sex at 20, erectile dysfunction is not a normal part of aging,” according to Michael Feloney, MD, urologic surgeon and expert on sexual dysfunction issues at the Nebraska Medical Center in Omaha. “You should still be able to have a satisfying sex life as you age." If you are experiencing erectile dysfunction, these 10 dos and don'ts may help.

Most of us are raised to believe that men are ravenous sex-beasts, eternally horny and only pretending to be a part of polite society so that they can find some new crevice to jam their Jeremy Irons into. So the first time we cross paths (and genitals) with a guy who can't get an erection, many of us immediately panic and assume that the problem must be us. We must be profoundly unsexy. After all, what could else possibly stop these hormone-addled maniacs from getting an erection?
Having these factors work in tandem all at once is key. "So many things have to go right for you to achieve a strong erection, which is why the strength of a man's erection is a great indicator for their overall health," explains Reitano. "For starters, your hormones must be released on demand, your arteries need to carry blood to the penis with perfect efficiency, your nervous system must transmit its signals without a hitch, and your mind must be working in perfect harmony with your body. That is a lot to ask of your body on demand."
Ask about transurethral pharmacotherapy. Your doctor may suggest you try this treatment, which involves placing a suppository into the urethra. The suppository contains alprostadil, which is then absorbed into the blood stream, relaxing blood vessels and improving blood flow into the penis. This treatment is thought to be less effective than the vacuum devices, or injection therapy.[16]

The answers to these questions, as well as physiological tests like an ultrasound or neurological assessment, can help determine the root cause of ED. Depending on the cause, different treatment options are available. Treatments range from medication, to hormone replacement therapy, to vascular surgery, to sex therapy and/or couples counseling. It sounds like you have ruled out many physical factors, in which case it may be useful to consider psychological factors. Often, couples counseling and/or sex therapy (as a couple or individual) can identify factors related to ED, help with communication, and improve sex for both partners. For a sex therapist, check out the American Association of Sexuality Educators, Counselors, and Therapists (AASECT) web site and click on the "Locate a Professional" link.
Alcohol: A couple of drinks can loosen your inhibitions and help you relax. But alcohol can also impair sexual functioning. Alcohol works on the nervous system by slowing down brain function, breathing, and pulse. Initially, the effect is often psychologically stimulating, since emotions and desires flow more freely. However, while alcohol may boost sexual desire by helping a person to relax, it can decrease performance, especially where erections are concerned. For this reason, it's best for guys to limit their alcohol intake to one to two drinks (or none at all) for optimal sexual function. 

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