Obesity. Obesity itself is not a risk factor for ED — but there is a connection. “The bigger concern is that obesity can lead to type 2 diabetes or vascular diseases, which are risk factors for ED,” says Montague. Morbid obesity, a term used to classify individuals who are significantly overweight, can cause hormonal changes that are triggered by excess body fat. In addition, obesity can put physical limitations on sexual intercourse.
The production factory of your semen is on an industrial scale, constructed from multiple locations in your genitourinary system. First there are the stars of the show, your spermatozoa, which are naturally synthesised in the seminiferous tubules within your testicles. During the ejaculation process, these then pass through your ejaculatory ducts and blend with fluids from your prostate, seminal vesicles and bulbourethral glands. This melting pot forms your semen as it arrives via urethral meatus (the end of your penis) to the cold light of day – or night.
While physical anatomy and chemical reaction are both important for getting and keeping an erection, the brain is one of the most vital parts of this puzzle. "An erection is controlled by multiple areas of your brain, including the hypothalamus, limbic system and cerebral cortex," notes Axe. "Stimulatory messages are sent to your spinal erection centers and this facilitates an erection. When there's an issue with your brain's ability to send these important messages, it can increase the smooth muscle tone in your penis and prevent the relaxation that is necessary to get an erection."

Cigarette smoking is a risk factor for ED, according to the 2014 Report of the U.S. Surgeon General. Excess weight can also contribute to erectile dysfunction. A 2004 Italian study found that one-third of their 110 obese study subjects were able to eliminate their erectile dysfunction problems by losing fifteen percent of their weight through diet and exercise.

Can a std cause a man not to get hard?


Remember those cultural messages we discussed earlier, about how men are wild sex aliens from the planet Weenus? Well, men are raised hearing those messages, too, and they can end up screwing with their sexual self-image —for instance, they can lead men to obsess over their own virility, and panic about impressing a new partner, until they've thought their boner into a corner and can't get an erection. Performance anxiety is one of the most common culprits behind lost erections, especially among younger, less experienced men.
It’s important not to take a bout of psychological ED personally. Still, when confronting a suddenly soft penis in the moment, “It’s not you” can be hard to believe. For instance, Erin, 22, tried—really tried—to make sex with Drew* happen. The first time his erection died right before they were about to have sex, she improvised and gave him “really long” oral instead. But the lack of a boner was confusing. “That had never happened to me with a sexual partner, so I was like, ‘Okay, he’s just not into me,’” Erin recalls. 

How often do 70 year olds make love?


Remember those cultural messages we discussed earlier, about how men are wild sex aliens from the planet Weenus? Well, men are raised hearing those messages, too, and they can end up screwing with their sexual self-image —for instance, they can lead men to obsess over their own virility, and panic about impressing a new partner, until they've thought their boner into a corner and can't get an erection. Performance anxiety is one of the most common culprits behind lost erections, especially among younger, less experienced men.
Research has shown that the same eating patterns that can cause heart attacks due to restricted blood flow in the coronary arteries can also impede blood flow to and within the penis. The blood flow is needed for the penis to become erect. Diets that include very few fruits and vegetables along with lots of fatty, fried, and processed foods can contribute to decreased blood circulation throughout the body.
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.
Ginseng (Panax ginseng) opens the arteries, including those that carry blood into the penis. Korean researchers gave 90 ED sufferers one of three treatments: a placebo, an antidepressant (trazodone), or ginseng. The placebo and antidepressant groups showed 30 percent erection improvement, the ginseng group, 60 percent. Other Korean scientists repeated this study, giving a placebo or ginseng (2,700 mg/day) to 45 men with ED. After 8 weeks, the ginseng group reported firmer erections. However, 2,700 mg of ginseng might cause jitters and possibly insomnia.

Don't forget mental health, either! "If you are experiencing stress at work, in your relationships or at home, open up communication about these issues," notes Axe. "Try natural stress busters like spending time outdoors, taking some vacation time for yourself or seeing a therapist. You also need to make sure that you are getting enough rest every night — seven to nine hours of sleep per night."
There can be both an indirect and direct way to achieve this. The reflex erection is the direct way, achieved by touching your penis to trigger the nerves in the lower part of your spinal cord and your peripheral nervous system. The psychogenic erection is the indirect way, via non-mechanical sexual stimulation (visual, for example) and sexual arousal. This activates the limbic system in your brain, sending electrical signals down to your erectile nerve centres via the lower regions of your spinal cord. The latter is why you can get both nocturnal or "morning glory" erections, rather non-erotically referred to as nocturnal penile tumescence. How romantic.
"When it's persistent and consistent, it's extremely likely to have biological factors" regardless of age, Dr. Irwin Goldstein, director of sexual medicine at Alvarado Hospital in San Diego and the director of San Diego Sexual Medicine, told Mic. But the cause of ED can also be psychological: For instance, if a man can get an erection on his own but not with a partner, then his ED is more likely to be rooted in performance anxiety or a deeper psychological issue. 
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.
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]
Most men know their penis is not likely to hit a grand slam every time it steps to the plate. According to a study published in the American Journal of Medicine, 85 percent of men between the ages of 20 and 39 say they “always” or “almost always” can get and maintain an erection, which means 15 percent of men in the prime of their life have a hard time getting hard at least occasionally. The same study found that of men between the ages of 40-59, only 20 percent said they could get a healthy enough erection for sex most of the time. In other words, solid wood is far from a foregone conclusion.

At what age does a man get erectile dysfunction?


Something James, 26, knows for sure about his penis is that it won’t get hard when he’s sleeping with a woman for the first time. No, it has nothing to do with how attracted he is to her. It’s just a classic case of performance anxiety, caused by his personal fears about how awkward and uncomfortable the experience could be—which, of course, turns into a self-fulfilling prophecy.
It’s important not to take a bout of psychological ED personally. Still, when confronting a suddenly soft penis in the moment, “It’s not you” can be hard to believe. For instance, Erin, 22, tried—really tried—to make sex with Drew* happen. The first time his erection died right before they were about to have sex, she improvised and gave him “really long” oral instead. But the lack of a boner was confusing. “That had never happened to me with a sexual partner, so I was like, ‘Okay, he’s just not into me,’” Erin recalls.

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