Impotence, or erectile dysfunction (ED), is the inability for a man to sustain an erection long enough for normal, satisfying sexual intercourse.  To understand the underlying causes of impotence, it helps to know the basics about how an erection develops, along with potential problems that get in the way. Erections begin in the brain with a thought related to sexual desire. Then a chemical message travels from the brain to the penis. Blood flow to the penis increases as blood vessels leading to the reproductive system relax and allow for increased circulation.
Spice up your love life with chillies. When your face flushes after eating a curry, that’s the blood vessels expanding thanks to the effect of the chillies. And it’s not just the blood vessels in your face that get the boost. Biologically speaking a hard-on is simple hydraulics – more liquid (blood) being forced into little tubes (blood vessels) in your penis – so what you need is a strong heart and smooth, healthy pipework.
Many stores sell herbal supplements and health foods that claim to have sexual potency and fewer side effects. They’re also often cheaper than prescribed medications. But these options have little scientific research to back up the claims, and there’s no uniform method on testing their effectiveness. Most results from human trials rely on self-evaluation, which can be subjective and difficult to interpret.
For many men, stopping smoking is an erectile dysfunction remedy, particularly when ED is the result of vascular disease, which occurs when blood supply to the penis becomes restricted because of blockage or narrowing of the arteries. Smoking and even smokeless tobacco can also cause the narrowing of important blood vessels and have the same negative impact. 
Experts don't yet know whether the vitamin folic acid (also known as folate) is an effective natural treatment for erectile dysfunction. Research has shown that for some men, taking sildenafil (Viagra) together with folic acid and vitamin B6 seemed to help with erectile dysfunction more than taking medicine alone. Some experts contend that folic acid improves the function of the blood vessels involved in erections. But scientists say they need more studies to know if folic acid helps erectile dysfunction, either alone or in combination with other treatments.
Some studies show that watermelon may have effects on erectile dysfunction that are similar to the ED drug Viagra and may also increase sexual desire. Watermelon is rich in beneficial ingredients known as phytonutrients. Phytonutrients are also antioxidants. One of their benefits is that they relax the blood vessels that supply an erection. Although watermelon is 92 percent water, the other 8 percent may work wonders for your heart and your sexual enjoyment.
Ginkgo biloba. Ginkgo is an herb that is used in Chinese medicine that’s thought to improve blood flow. "Any ED treatment that improves blood flow may help," explains Dr. Harris. "An erection is just blood in and blood out." However, the evidence that ginkgo can improve blood flow in ED is limited, and most experts say the jury is still out. In addition, ginkgo can increase the risk for bleeding problems if combined with certain medications, such as warfarin (Coumadin).

A 2000 study conducted at the Institute of Sexology in (where else?) Paris found that muira puama, a Brazilian shrub traditionally used in South African folk medicine as an aphrodisiac, increased libido in a majority of men who complained of impotence and a lack of desire. Other studies show this happy-making herb also counteracts chronic stress, depression and nervous exhaustion.
Ginseng. Korean red ginseng has long been used to stimulate male sexual function, but few studies have tried systematically to confirm its benefits. In one 2002 study involving 45 men with significant ED, the herb helped alleviate symptoms of erectile dysfunction and brought "enhanced penile tip rigidity." Experts aren't sure how ginseng might work, though it's thought to promote nitric oxide synthesis. "I would recommend ginseng [for men with ED]," says Espinosa. Discuss with your doctor before taking it since ginseng can interact with drugs you may already be taking and cause allergic reactions.
In a study by Segal et al. (11), 4 out of 5 healthy individuals were able to achieve tumescence beyond 60% maximum rigidity when subjected to PVS using the Viberect® alone, with no other external visual sexual stimulation. In a randomized controlled study by Fode et al. (12) involving 68 men who underwent nerve-sparing radical prostatectomy, 30 men who received PVS to the frenulum daily for 6 weeks, using the Ferticare® vibrator, showed a trend towards better erections. After 1 year, 53% in the PVS group had an IIEF score ≥18 compared with 32% in the control group, although no statistical achievement was achieved. The role of PVS in penile rehabilitation is based on the postulation that PVS provides early activation of the parasympathetic erectile spinal centres at S2–S4 level, which result in early recovery of the neuropraxic cavernosal nerves.

Some of the herbs used in these herbal ED pills are aphrodisiacs which enhance testosterone secretion in male body. This hormone rejuvenates exhausted reproductive system, stimulates nerve functions and improves strength and endurance of other organs of male genital region. Optimum availability of testosterone hormone removes all sorts of debilities which may occur in male reproductive system due to reasons of ED or due to ageing and diseases. Higher testosterone level promoted by these herbal ED pills promote higher sensation in male genital region to cause intense arousals, active nerves promoted by these best ED pills stimulate sensation and also delay a male’s ejaculation for longer period. All these benefits provide natural erectile dysfunction treatment by causing intense arousals and promote powerful erections.

Research indicates that some specific nutrients—from common vitamins to lesser-known plant extracts—have demonstrated positive effects on very specific aspects of penile performance. Eat This Not That! has rounded up the best examples of these superfoods. And make your little guy look bigger by flattening your belly! After reading this, don’t miss these best foods for sexual stamina!
The treatment of ED using TCM ties in with the treatment of late-onset hypogonadism (LOH). LOH occurs due to the breakdown in coordination between the heart and the kidneys, deficiencies of the spleen and kidney (yang), deficiencies of the liver and kidney (yin) and deficiencies of the kidney (yin and yang). The endocrine function of the pituitary and gonads becomes disordered with age due to a depression of overall function. This results in accumulation of free radicals and other toxins that cannot be relieved solely with male hormone supplementation. Warm yang can energize kidneys to benefit the body, remove toxins, invigorate qi and promote blood circulation. Free radicals are removed, blood fat regulated, cardio-cerebral blood flow improved and again the key here is to improve the function of the digestive, respiratory and endocrine systems, hence regulating the body in every aspect holistically (28).
Another common cause of ED for many men is stress. When the body is under stress—either mental or physical—the sympathetic nervous system kicks in, releasing a cascade of stress hormones. Chronic stress leads to elevated levels of these hormones, which can lead to weight gain around the middle, and remember, those excess fat cells convert testosterone to estrogen. Stress also reduces sexual drive and leaves very little physical energy for sex. If chronic stress is a problem, try these supplements:
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Researchers discovered men who regularly consumed flavanoid-rich foods—especially those with anthocyanins, flavones, and flavanones—experienced a significantly reduced risk of the disorder than those who did not. Good news since the foods are already popular in American diets. Lead researcher Aedin Cassidy says, “…the top sources of anthocyanins, flavones and flavanones consumed in the U.S. are strawberries, blueberries, red wine, apples, pears and citrus products.”
How men can improve their sexual performance Many men want to know how to enhance their own and their partners’ sexual satisfaction. However, placing too much emphasis on performance can lead to anxiety. Certain lifestyle changes can help to reduce sexual anxiety, improve erectile dysfunction, and increase stamina. In this article, we describe 13 methods to try. Read now
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