It is typically offered after surgery to remove the prostate because of cancer and also after procedures to treat bladder, rectum and colon cancer. The adrenaline causes the arteries in the penis to constrict, limiting blood flow, and the muscles in the penis to contract. A supplement called arginine may also help - it works mainly by increasing the production of nitric oxide. Indeed, scientists have found that men whose automatic nocturnal erections reduce or disappear have more difficulty sustaining erections when awake. So as well as being a symptom of heart disease, erectile dysfunction can be a vital early warning sign of it. It is treated with injections of a drug that helps to drain the blood out of the area.
Most commonly it's caused by sickle-cell anaemia - a disease mainly affecting African men where the red blood cells are sickle-shaped, instead of round, making them more likely to become trapped inside the penis so it remains rigid. This phase has been dubbed the 'andropause' as the time it starts matches the time of the female menopause although while the menopause affects a woman's fertility, this is not as dramatic in men. Throughout the night men experience a number of erections, which are thought to be crucial to the health of penile tissue. As we will see, one of the key lessons about male virility is that an active sex life creates a virtuous cycle - it makes erectile dsyfunction less likely, protects a man's prostate and even stops the penis shrinking with age. A supplement called arginine may also help - it works mainly by increasing the production of nitric oxide. To deal with this lack of confidence, Dr Virag recommends gradually reducing the dose, and spacing out the frequency at which the pills are taken, until the man can enjoy satisfactory sexual activity without them. An average flaccid penis is 9. Erectile dysfunction can also be an early sign of multiple sclerosis - which damages nerves. There are testosterone receptors, which bind to the hormone to make it effective, inside the penis so they won't be activated if there isn't enough of the hormone, making it difficult for the penis to become rigid. The more failures a man has, the more he tries to avoid sex, and his fear increases and his desire plummets. Although some medications, such as tricyclic drugs often used as treatment for mental health problems, can spontaneously cause erections, possibly because they spark metabolic changes. Erection difficulties can also suggest furred-up arteries risk factors include high cholesterol, smoking, alcohol, diabetes, high blood pressure and obesity - even a small blockage in the penile arteries will lead to a poor-quality erection because the vessels are so narrow. Another option is an injection of a drug to relax the blood vessels so blood flows more easily to the penis. This usually takes effect between five and 15 minutes after use and has fewer side-effects than oral medicines. Around 5 to 10 per cent of male MS patients are affected in this way. It's not known exactly why this happens, but it often occurs without any sexual activity - it can occur as a result of leukaemia a blood cancer that causes the blood cells to change shape or from a direct knock to the area. Disrupted sleep cycles are a cause of reduced or absent automatic nocturnal erections While we sleep the body undertakes maintenance and repair to all our cells and tissues, including the genitalia. In a healthy man, the size of their organ can decrease slightly with the ageing process, due to changes in blood flow due through blocked arteries, while the collagen that helps keeps tissue firm becomes less efficient with age. However, during REM sleep, a different branch of the nervous system takes over, taking the brakes off, and widening the blood vessels. Studies suggest that in a group of men with penile artery disease, 50 to 75 per cent of them will also have the early stages of blocked arteries around the heart. All ages can suffer from fear of failure - pressure and shyness can be factors - but as men get older they worry about impotence. Studies have found that men with low testosterone often say it is difficult to achieve another erection - this improves when they are treated to boost their testosterone levels. Share this article Share Another problem is that from the 40s onwards, testosterone levels drop because the testicles aren't able to produce as much of it. Animal studies have shown that lower levels of testosterone affect penile tissue. These kinds of problems can be triggered by a disrupted sleep cycle caused by taking sleeping pills or working night shifts. This starts with the instant and simultaneous arrival of two types of chemical messengers - adrenaline and endorphins. This refractory phase lasts longer as a man ages, possibly because it takes longer for the body to clear the feel-good chemicals and start the production of nitric oxide.
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