Additionally, extensive cigarette, alcohol and drug use can play a role, hence the terms "whiskey dick" and, most recently, "weed dick." According to a recent Playboy article by Dr. Justin Lehmiller, a social psychologist at Ball State University and author of the Sex and Psychology blog, recent studies show that erectile dysfunction's prevalence is "three times as high for daily marijuana smokers compared to those who don't use it at all."
The reversal of an erection is obviously necessary, but as Dr. Michael Reitano, physician in residence at Roman explains, this can be the impetus for weaker erections. "Usually there is a balance between the chemicals that result in the increased blood flow that results in a firm erection and the chemicals that allow blood to exit the penis and return it to being soft," he says. "That balance is precise and occurs in a sequence that allows an erection to last only as long as needed. However, in someone who experiences a softer erection, the balance of the chemicals that make the penis hard and the chemicals that return it to being soft is off. The scale is tilted."

What causes a man not to erect?


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?


Some of the most reliable ED stats have emerged from a large data collection effort called the Massachusetts Male Aging Study. According to that data, rates of ED among men tend to correlate with their age bracket, says Tobias Köhler, M.D., chief of the Division of Male Infertility at Southern Illinois University. “Roughly 40 percent of men in their 40s suffer from ED, 50 percent in their 50s, etc.,” he says.

How many times does a man get erect in a day?


Most men may not openly talk about their erection problems, but erectile dysfunction — when a man cannot achieve or maintain an erection well enough or long enough to have satisfying sex — is very common. According to the National Institutes of Health, 5 percent of 40-year-olds and 15 to 25 percent of 65-years old have ED. But while ED is more likely to occur as a man gets older, it doesn’t come automatically with age.
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. 

The National Institutes of Health estimates that erectile dysfunction strikes as many as 30 million men in the United States. Its prevalence does increase with age — 4 percent of men in their 50s are affected by ED, 17 percent in their 60s, and 47 percent of those over 75. But research has also found that 5 percent of those affected were between 20 and 39.
As the nervous system of autonomic response, the erection can result in different stimuli that include the sexual arousal and stimulation which is not even under the control of the conscious mind. The absence of the nocturnal erection is also used commonly for distinguishing between the psychological and physical cause of impotence and erectile dysfunction.
In an article on Men’s Health about things that wreck your erection, some examples of threats to an erection are sugar, lack of sleep, sleeping near a newborn baby, and lack of vitamin D. The common theme in the article is that reduced testosterone impacts your erection. Not all scientists agree with that. But there are definitely links between testosterone and erectile problems.

what is the main cause of erectile dysfunction young men

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