To understand the physiology of erectile dysfunction, we need to know erection first. An erection occurs when impulses from the brain and genital nerves cause blood to fill the two chambers known as the corpora cavernosa in the male penis. This causes the penis to expand and stiffen. Anything that blocks these impulses or restricts blood flow to the penis can result in ED. This block may be caused by psychological, neurologic, hormonal, arterial, or cavernosal impairment or even from a combination of all these factors.3

The diagnosis of erectile dysfunction requires a comprehensive sexual and medical history that include a validated questionnaire, the Sexual Health Inventory for Men (SHIM), and asking if they experience a rigid erection at night, in the morning, or during masturbatory approaches. The presence of rigid morning or night erections, or rigid erections at any sexual thought suggests a mainly psychogenic cause. Conversely, erectile dysfunction with a gradual onset, progressive course, or long duration suggests a predominantly organic cause.
The brew is rich in compounds called catechins, which have been shown to blast away belly fat and speed the liver’s capacity for turning fat into energy. But that’s not all: Catechins also boost desire by promoting blood flow to your nether region. “Catechins kill off free radicals that damage and inflame blood vessels, increasing their ability to transport blood,” says Cassie Bjork, RD, LD of Healthy Simple Life. “Catechins also cause blood vessel cells to release nitric oxide, which increases the size of the blood vessels, leading to improved blood flow,” she explains. Blood flow to the genitals = feeling of excitement, so sipping the stuff will, well, make you want to get it on. Bjork suggests drinking four cups a day to feel the full effects. Pick up one of our 5 favorite teas for weight loss.

The definition of erectile dysfunction (ED) is the inability to obtain or maintain an erection firm enough for sexual intercourse. Historically, admitting to having ED was considered taboo and downright embarrassing until the advent of sildenafil citrate (Viagra) in 1998. Sildenafil liberated men from the stigma of having ED, and it opened a conversation about a problem that has existed for centuries. Up to 10% of men younger than forty suffer from ED and upwards of 60% by age 69.1
Penile prosthesis implant remains the most effective and permanent treatment for ED. Penile prosthesis implants can be broadly divided into malleable and inflatable prostheses (20). Malleable penile prosthesis, also known as semi-rigid prosthesis, does not allow for (physiological) flaccid state of the penis. The patient can bend the prosthesis upwards for sexual intercourse and downwards for concealment. Although the angle of prosthesis concealment has improved with recent devices, however due to the constant rigid state of the penis, they are still less comfortable compared to their inflatable counterparts, are more likely to cause social embarrassment and associated with higher risk of implant erosions (21). However, malleable prosthesis still has its place for the treatment of ED as these implants are easier to handle, easier to place and would benefit patients with impaired manual dexterity.
How common is impotence? According to findings from several studies, including “The Massachusetts Male Aging Study,” overall prevalence for men between 40–70 years old is around 52 percent (or around 30 percent of all men between 18–60 years old). That’s right — nearly half of all men over 40 experience erectile dysfunction symptoms at some point. Not surprisingly, research demonstrates that impotence is increasingly prevalent with age. Around 40 percent of men in their 40s experience sexual dysfunction. Up to 70 percent of men in their 70s experience ED. (1) Every year more than 617,000 new cases of impotence occur in the United States alone.
Penile implants - are generally used if physical damage (like an accident) makes the anatomical parts needed for an erection not work. These are inserted by surgery and can provide a permanent treatment choice if others fail to work. The implants can be semi-rigid or inflatable. They can be pretty expensive and are not usually available on the NHS.

Mirja Holtrop was born and raised in Germany, where she studied Computer Science and Public Relations. After working as a Marketing Assistant for a couple of years she joined the Dr. Rath Health Foundation. In the early 2000s she moved to South Africa where she studied Education at the University of Cape Town. Her first book, ‘The Secret of Cells’, was published in 2004.
L-arginine, or arginine, is an amino acid found in red meat, poultry, fish, and dairy products that helps expand blood vessels and increase blood flow. “The body uses this semi-essential amino acid as the primary building block for nitric oxide,” explains Harry Fisch, M.D., clinical professor of urology and reproductive medicine at Weill Cornell Medical College/New York Presbyterian Hospital.
In addition, when research has shown a nutrient such as zinc or niacin to improve sexual function, it's usually in people who are deficient in it. So, before you stock up on over-the-counter nutritional supplements for ED, speak with your doctor. He can test you for deficiencies and steer you toward the most effective and safest way to treat your erectile dysfunction. 
Information on this website is provided for informational purposes only and is not intended as a substitute for the advice provided by your physician or other healthcare professional. You should not use the information on this website for diagnosing or treating a health problem or disease, or prescribing any medication or other treatment. Any third party offering or advertising on this website does not constitute an endorsement by Andrew Weil, M.D. or Healthy Lifestyle Brands.
Also called vacuum devices, penile pumps are devices that are placed over the penis to draw blood into the shaft. Once the vacuum creates an erection, the retaining band is slid down to the lower end of the penis and the pump is removed. An erection typically will last long enough for intercourse but your penis may be cold to the touch and the rubber band may restrict ejaculation.22
Coffee / Caffeine.  A study found that men who consume the equivalent of 2-3 cups of coffee per day have a 39% lower incidence of erectile dysfunction than men who do not drink coffee11. Although the study showed a correlation between drinking coffee and  a lowered incidence of ED, it did not demonstrate a causative relationship.  Note that consuming larger amounts of coffee can raise stress and adrenaline levels, and can actually contribute to ED.
If you search the Internet, you’ll find lists of specific foods that are supposed to be good for erectile dysfunction.  We’ve researched this topic extensively, searching databases of clinical studies, and found no evidence that these foods provide significant benefits from men with ED.  (We suspect that most of the sites on the web are simply copying lists from one another.)

To understand the physiology of erectile dysfunction, we need to know erection first. An erection occurs when impulses from the brain and genital nerves cause blood to fill the two chambers known as the corpora cavernosa in the male penis. This causes the penis to expand and stiffen. Anything that blocks these impulses or restricts blood flow to the penis can result in ED. This block may be caused by psychological, neurologic, hormonal, arterial, or cavernosal impairment or even from a combination of all these factors.3


The fowl most associated with belt-loosening feasts is lean, high in protein and the single best food source of arginine, the amino acid. Researchers at the NYU School of Medicine gave L-arginine to a group of impotent men, and found that six out of 15 men receiving the amino acid claimed an improved ability to achieve erections, while none of the 15 men in the placebo group reported any benefit. Additionally, the bird is rich in DHA omega-3 acids, which have been shown to boost brain function, improve your mood and turn off fat genes, actually preventing fat cells from growing! Just make sure you buy white meat only, as dark contains too much fat. And steer clear of prepackaged, sliced lunchmeat—those turkeys are strictly jive.
This tasty green nut may be more than a great snack. A study published in the International Journal of Impotence Research examined how eating pistachios affected ED. Measurements were taken before men were put on a nut-heavy diet and after. Consuming pistachios for several weeks showed improvement in several parameters of ED, including improved International Index of Erectile Function scores for study participants.
Processed Foods tend to have fat, salt, and sugar added to them, as well as preservatives and other chemical additives that can be harmful to your health. Processed foods include frozen foods, canned foods, processed meats, and many snack foods. Some research links eating processed foods to depression, which is something that can cause erectile dysfunction.
There’s a reason chocolate became a gift given before amorous activity. Cacao increases levels of the mood-boosting hormone serotonin, which can lower stress levels, boosting desire and making it easier to reach orgasm. And that’s not all: Cocoa also increases blood flow through the arteries and relaxes blood vessels, sending blood to all the right regions, which can boost pleasure.
In a prospective human phase 1 open-label and single-arm study reported by Haahr et al. (27), 17 men with refractory post radical prostatectomy ED were given a single intracavernosal injection of autologous adipose-derived regenerative cells (ADRCs) freshly isolated after a liposuction. The procedures were well-tolerated and over a 6-month follow-up period, 8 of 17 men showed improvement of their erectile function.
This content is strictly the opinion of Dr. Josh Axe and is for informational and educational purposes only. It is not intended to provide medical advice or to take the place of medical advice or treatment from a personal physician. All readers/viewers of this content are advised to consult their doctors or qualified health professionals regarding specific health questions. Neither Dr. Axe nor the publisher of this content takes responsibility for possible health consequences of any person or persons reading or following the information in this educational content. All viewers of this content, especially those taking prescription or over-the-counter medications, should consult their physicians before beginning any nutrition, supplement or lifestyle program.
According to Daneshgari, "Your best bet is to eat a healthy diet that is good for your heart and your circulation." Other foods that are good for your circulation include cranberries, apples, peanuts, onions, tea, and red wine. Chances are, if you take good care of your vascular health, you will avoid many of the common causes of erectile dysfunction.
And what about L-citrulline? Watermelon has the highest concentration in nature (particularly the white rind), followed by onions and garlic. Just one standard serving of yellow watermelon provides enough L-citrulline to boost sexual performance. My advice is that you might want to stick to watermelon and not onions and garlic to boost your nitric oxide production before going on a date!
B-vitamin complex helps to support normal energy production and is also essential for supporting the normal functioning of the body during times of stress. Stress quickly depletes the body’s reserves of the B vitamins. Look for a B-complex containing 20-50 mg of vitamins B1, B2, and B3. The other B vitamins should be included in their relative proportions.
Coffee / Caffeine.  A study found that men who consume the equivalent of 2-3 cups of coffee per day have a 39% lower incidence of erectile dysfunction than men who do not drink coffee11. Although the study showed a correlation between drinking coffee and  a lowered incidence of ED, it did not demonstrate a causative relationship.  Note that consuming larger amounts of coffee can raise stress and adrenaline levels, and can actually contribute to ED.

Nettle root extracts are known for their ability to restore normal production of important sex hormones, such as testosterone. The primary action of nettle root is linked to its action on the glands that produce testosterone. Nettle root contains serotonin and acetylcholine, both of which directly stimulate testosterone production and boost the functioning of these vital glands.
If you can't take one of these oral medications, your physician may have you try Caverject (alprostadil for injection), a hormone that you inject into your penis using a fine needle, or Muse (alprostadil urogenital), a tiny suppository that you insert into the tip of the penis. Both of these will bring on an erection within five to 15 minutes without sexual stimulation.
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