The following parameters were computed using the observed behavioral measures. Copulatory efficiency (proportion of mounts resulting in vaginal penetration relative to the total number of mounts), intromission ratio (number of intromissions/number of intromissions + number of mounts) and intercopulatory intervals (average time between intromissions).[8]

Three of the randomized studies (25–27) that contributed to the present study data indicated the positive role of both interval and continuous aerobic training in the dual management of both ED and cardiovascular disorders (hypertension and ischemic heart disease ,respectively); this is not surprising because of the arterogenic interrelationship between ED and several cardiovascular disorders. The physiological basis for the therapeutic role of continuous exercise in the management of both ED and some cardiovascular disorders as reported in the present study, could be related to the biochemical, neural and hormonal changes in the blood vessel walls that induce an acute and long-term blood vessel relaxation. The blood vessels might relax after each exercise session because of body warming effects; local production of certain chemicals, such lactic acid and NO; decreases in nerve activity; and changes in certain hormones and their receptors (32, 33). Over time, as the exercise is repeated, there appears to be a growing evidence of a prolonged effect. Thus, chronic (regular, longterm) physical training might reduce basal concentrations of inflammatory markers.
Males consuming yohimbine HCL for its pro-erectile benefits should take 5.4mg to 6mg three times per day but don't expect for the results to be noticeable until after about two to weeks of consistent dosing. [4] Not all males will experience this benefit so if you do not notice a change after four weeks of consistent dosing then consider stopping supplementation altogether.
This African tree bark extract sends blood flow to the genitals, said herbalist Ed Smith, a founding member of the American Herbalists Guild, who adds a warning that Yohimbe can cause nervousness and raise already-existing high blood pressure (so avoid taking it if you have heart or kidney disease), and can also negatively interact with antidepressants.
A study of 23 individuals found that a dose of 0.4mg/kg of yohimbine not only increased norepinephrine in the blood, blood pressure, and heart rate, but it also increases impulsive response rates. These response rates are measured by the number of impulsive errors, response biases, and reaction times on an immediate memory task. [10] While yohimbine may improve your reaction time it may also encourage you to act irrationally.
• Eliminate your bad habits: Bad lifestyle habits may take a toll on your body, making it harder for you to maintain your athletic performance, regulate your weight or treat sexual dysfunction. To keep your body in its best condition, quit your bad habits immediately — eliminate smoking, avoid excessive alcohol intake and cut down your late-night meals.
Selenium, found in Brazil nuts, liver and oysters, is a trace mineral that plays an important role in hormone health. You only need a tiny bit for healthy sperm, but a tiny deficiency can be catastrophic for reproductive health. In one study, men who had lower testosterone and were infertile also had significantly lower selenium levels than the fertile group. Supplementing with the mineral improved chances of successful conception by 56 percent. And a second British Journal of Urology study that included 69 infertile men with low levels of the mineral, found selenium supplementation could significantly improve sub-par sperm motility associated with testosterone deficiency. Check out these 7 Testosterone-Boosting Foods!

However, the case is entirely different for Niacin, as it is not only relatively more convenient, but also it allows men to enjoy sex any time when they want even when they take Niacin for only one time in a day for erectile dysfunction. Niacin formulates in the form of various slow-release pills designed primarily to seep in a slow way within the human bloodstream during the course of one day.
b) Men With Digestive Disorders.  There are many, many GI disorders that plague modern, urban dwellers:  atrophic gastritis, Crohn's, diverticulitis, enzyme deficiencies, IBS, ulcerative colities and on and on.  All of these can lower vitamin and mineral absoprtion.  Men struggling with these issues may very well benefit from increased amounts of niacin in the diet or possibly with supplementation.
Making sure you have healthy ways of coping with stress is part of maintaining good sexual health. If necessary, you may want to look into consulting a medical professional about the best way to manage your emotions and keep your stress levels in check. One study found that participants with ED who underwent an eight-week stress management program emerged with significantly improved symptoms. It might also be a good idea to address any relationship issues that could be leading to anxiety in the bedroom.
Counselling or sex therapy (58% of people find this works for them) –mind-related causes of erectile dysfunction can affect anyone. They are more likely if you experience erectile dysfunction at a younger age. Talking to a counsellor or therapist can help some people overcome erectile dysfunction related to these problems, possibly for good. They can also help you if your erectile dysfunction is causing you stress, as this can make matters worse.
The problem with this though is that there are a lot of websites that are claiming to have a specific exercise technique or perhaps very effective male enhancement products that can guarantee erectile dysfunction. Be careful not to fall for a male enhancement scam. Even though erectile dysfunction may be stressful or difficult to discuss about, there are proven and safe methods that can help you in dealing with it.
Regular cardiovascular exercise can not only improve erectile function, it can boost energy levels, lower blood pressure, and improve muscle tone. Furthermore, by reducing body fat and stress, regular cardio can improve a person’s self-image, improve sleep, and result in a more rested overall feeling. For maximum benefit, 20 to 30 minutes of cardiovascular exercise four or five times a week is ideal, and it may take time to work up to this. It’s smart to discuss this with your doctor if you have been living a sedentary lifestyle or haven’t had a physical in a while. The key to sticking with cardio is choosing an activity you enjoy so it won’t feel like a chore. Great choices in the cardiovascular exercise include:
Vitamin B12 can be found only in the products of animal origin. That is, the greatest amount of this vitamin is available in by-products (liver, kidneys, and heart). The other vitamin B12 rich foods include cheese, seafood (crabs, salmon fish, and sardines), meat, and poultry. Vitamin B12 deficiency declares itself by diarrhea, decreased appetite, tingling tongue, burning tongue, low stomach acid, altered skin sensation, and impairment of sensation in the extremity muscles.
Most studies related to male infertility show a clear concise relationship between zinc and ed. During a study some young men were given a diet which included very little amounts of zinc and thus they developed a zinc deficiency. When testosterone levels were measured after 20 weeks of low-zinc diet it was found that the level of the hormone had drastically reduced. The study also found that in elderly men, with an increase in the uptake of zinc, testosterone levels nearly doubled.
Another study discovered that nicotine significantly reduced participants' physical arousal in response to erotic films; the erections achieved by study participants who had ingested nicotine were 23% smaller than those who hadn't. This is in spite of the fact that participants didn't report feeling any less psychologically aroused by the erotic films.
That said, I think that guys like myself who eat a ton of plant foods have to be consider the fact that they may not always be getting all the niacin they could.  Men with lower niacin status can probably give their erectile strength and cardiovascular health a nice boost by consuming more niacin-rich plant foods.  There are many plant foods, such as broccoli and mushrooms that are quite high in niacin.  I actually consume nutritional yeast and BPA-free sardines daily and get a nice amount of niacin this way on top of my regular diet.  Therefore, I feel that I am likely maximizing my erectile strength by combining the best of both worlds, i.e. some NO-boosting plant foods and high niacin foods as well.  (Both  sardines and nutritional yeast also have a decent amount of protein as well, which is important to me since I enjoy lifting weights.)
I recently treated a young twenty-something man with a primary complaint of erectile dysfunction. When he started to notice this issue, he attempted to treat it by performing lots of kegels. (If you haven’t heard of kegel exercises, they’re done by repeatedly contracting and relaxing the muscles that form part of the pelvic floor, as if you were trying to stop peeing mid-stream.) I found this man’s story interesting because, as we discovered, in his case the kegels actually did more harm than good. We found that once he stopped kegeling and allowed his pelvic muscles to relax, his erections became stronger and he was able to ejaculate without any issues.
In addition to lowering low-density and total cholesterol along with triglycerides, increasing high-density lipoprotein cholesterol (HDL-C) has become one of the principal objectives for treating hyperlipidemia. Considerable evidence has shown that even a minor improvement in HDL-C levels may significantly reduce cardiovascular risk. For example, it has been found that an increase of 1 mg/dl in HDL-C levels results in a parallel reduction in coronary artery disease risk by 2% in men and 3% in women. Moreover, HDL-C helps to transport oxidized cholesterol from peripheral tissues where it instigates atherosclerosis to the liver for excretion. Furthermore, HDL-C has potential anti-inflammatory, anti-thrombotic and anti-oxidant effects.
Yohimbine has had questionable effects in men with organic erectile dysfunction. We conducted this study to better define the population of men responsive to yohimbine, because tobacco was thought to affect a regimen of yohimbine more than other risk factors. We measured nocturnal penile tumescence with the RigiScan™ monitor, hormone profiles, answers to the Florida Sexual Health Questionnaire, and clinical responses at baseline and after two different doses of yohimbine in 18 nonsmoking men with erectile dysfunction. Of the 18 men, nine (50%) were successful in completing intercourse in more than 75% of attempts. The yohimbine responders were men with less severe erectile dysfunction as manifested by improved increased rigidity on RigiScan™ testing, higher Florida Sexual Health Questionnaire scores, and slightly higher levels of serum testosterone. Yohimbine is an effective therapy to treat organic erectile dysfunction in some men with erectile dysfunction.
The development of successful sexual behavior involves not only important neuroendocrine and local genital changes that begin at puberty, but also psychological and social influences that occur both before and after puberty.[7,8] Sexual behavior in males is regulated mainly by internal patterns of hormones; i.e. T, progesterone and PRL. These hormones are modulated by the male interactions with the social environment.[9]

Zinc therapy (5 mg/day) improves sexual competence by increasing penile thrusting and prolonging ejaculatory latency without disturbing arousability and motivation of male rats. Increase in the T levels observed with zinc supplementation is beneficial in this regard. However, increase in PRL is responsible for the reduced libido index. Further studies on pigs and monkeys are needed to evaluate the possible therapeutic use of zinc in sexual dysfunction.
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The final study we will be examining in this article took a novel approach to by dosing 16 healthy male subjects with 7.7 milligrams of yohimbine tartrate and 6 grams of L-arginine glutamate and comparing it to a placebo. Depending on their group each subject was randomly assigned to consume the placebo one week and the novel compound the other week.

Thank you for posting this. The exact same thing happened to me, My Dr. recommended Niacin to reduce LDL and increase HDL. Trouble is I noticed my sex life really dropped quickly. Very rare to get and maintain an erection. I couldn't quite tell but it seemed to me the problems started a couple of weeks after I began the Niacin. Out of desperation I quit Niacin to see what would happen and suddenly the full and regular erectiions came back. Everything I read says the effect should be the opposite. Now I have to decide do a die earlier of heart disease and have more sex or better cholesterol control with a diminished and almost non-existent sex life. Pretty sure I'm gonna favor the sex life!
Yohimbe supplements haven't been tested for safety and keep in mind that the safety of supplements in pregnant women, nursing mothers, children, and those with medical conditions or who are taking medications has not been established. You can get tips on using supplements here, but if you're considering the use of Yohimbe, it is essential that you talk with your physician first. 

Pelvic floor PT is a proven and effective treatment for erectile dysfunction. A study in 2006 involved 146 men with mean age of 42 with pelvic pain; 92% of these men had sexual dysfunction.  Treatment consisted of trigger point release and relaxation training, which led to improvement in symptoms by 77-87% – it’s notable that kegels were not part of this study.
Yohimbe has been shown to be an alpha-adrenoceptor blocker. This action reduces the effects of hormones that increase the constriction of blood vessels as a person ages. Yohimbe also increases production of norepinephrine, which plays a role in achieving erection during sexual arousal. Yohimbe increases the amount of adrenaline that reaches the nerve endings, enhancing sexual sensations and allowing for a more satisfying sexual experience. Yohimbe has been shown to support sexual longevity.
Penile erection is a hemodynamic process involving increased arterial inflow and restricted venous outflow, coordinated with corpus cavernosum and penile arterial smooth muscle relaxation. Any problem in this mechanism results in Erectile Dysfunction and its etiology is generally multifactorial. This study is aimed at determining the objective outcome of aerobic training in the management of Erectile Dysfunction of arterogenic origin using Meta analysis.
David Gomes completed his M.S Professional degree in California Institute of Technology. He lives in Oakland, California, USA. He loves to write on a variety of topics such as joint health, weight loss, beauty and skin care for blogs and on-line publication sites. He also loves latest technology, gadgets. You can connect with him on Google+ and Twitter.
What are the alternatives to viagra? Erectile dysfunction, when a man cannot achieve or maintain an erection, is a common condition that causes much distress. Viagra is just one of several drug treatments that can help relieve the problem. Other methods and treatments can help, too, including alternative herbal remedies that people may wish to try. Read now
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Besides that, dyslipidemia (and hypercholesterolemia in particular), remain undertreated in many patients diagnosed with coronary artery disease. High triglycerides, a contributor to cardiovascular dysfunction by many but not all studies, are somewhat treatable with fibrates, yet there are significant limitations for their use. Elevated fasting triglyceride levels have been shown to be a strong risk factor for ischemic heart disease, independent of other known risk factors for atherosclerosis.

The endothelium is vital to the maintenance of vascular health. It is a critical determinant of vascular tone and patency, reactivity, inflammation, vascular remodeling, and blood fluidity. (9, 10). Nitric oxide (NO) is the most potent vasodilator and is secreted by the endothelium. It is synthesized from Larginine by the endothelial enzyme NO synthase (eNOS). NO released in response to sexual stimulation relaxes penile vascular smooth muscle by increasing intracellular cyclic 3′, 5′-guanosine monophosphate (cGMP) concentration. Vasodilatation of erectile tissues allows the sinusoidal spaces to fill with blood resulting in the attainment and maintenance of an erection (5).

Size matters, so get slim and stay slim. A trim waistline is one good defense — a man with a 42-inch waist is 50% more likely to have ED than one with a 32-inch waist. Losing weight can help fight erectile dysfunction, so getting to a healthy weight and staying there is another good strategy for avoiding or fixing ED. Obesity raises risks for vascular disease and diabetes, two major causes of ED. And excess fat interferes with several hormones that may be part of the problem as well.
Kegel exercises are very effective, simple and affordable methods in enhancing the strength of your muscles. These muscles are the ones that are involved in your sexual function. If you are unsure of the information that you read online, the best option is to talk with your doctor about your condition in order to avail of the best treatment methods for you.
Although you should steer clear of supplements advertised online, research shows certain vitamins and herbs can help ED. They may help improve the health of your blood vessels, increase blood flow to the penis, and boost erectile function. If other treatments have failed, you’re not a candidate for ED medications, or you’re looking for a more natural approach, ask your doctor whether these supplements could be right for you. Here are three to discuss with your doctor:
The appropriate dose of yohimbe depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for yohimbe. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.
I'll explain the best exercises for sex below. Know that if you suffer from PE or ED you also need to change the way you are thinking about sex to gain full control of yourself. Not just during sex, but in the lead up to sex as well, so you can reprogram your brain to achieve hard and in control. I explain this in the following video which is taken directly from my Sex Mastery program:

Scientists have found a consistent link between maintaining a healthy weight and avoiding erectile problems. In one Italian study, researchers followed 110 obese men experiencing ED over the course of two years. Of the participants that lost the most weight, 31% ceased to suffer from ED. In the group that lost the least weight, only 5% of the men saw an improvement.
But researchers emphasize that immediate-release niacin should remain as a treatment option for high cholesterol. "The point of our study is not that niacin should be avoided, but that the immediate-release preparation is the preferred form, and that medical supervision and evaluation are necessary for people taking this drug," said James McKenney, professor and chairman of the division of clinical pharmacy at the Medical College of Virginia.

Clinically I have seen these results in doses of just 20 mg twice daily.   It is important to note that prolonged zinc supplementation can lead to lowered copper levels so it is not advisable to continue this therapy unless it is in a cyclical nature.  For those on long term zinc there are combination products with Zinc and Copper.   In cases where some prescriptions that lower zinc are given, like acid lowering meds, thiazide diuretics and ACE inhibitors, or in renal dialysis patients, this chronic monitoring of zinc may lead to longer term supplementation.
Athletes or dieters sometimes use products containing yohimbe to help promote easier weight loss, especially from body fat, and to increase energy expenditure. Some have speculated that it may help increase muscle mass and endurance while cutting fat. But there’s not much evidence from studies that this is necessarily true. Yohimbe does seem to have potential to increase energy expenditure by acting as a stimulant, increasing adrenaline levels in the body and potentially preventing fatigue during or following exercise.

In the New World, maize was traditionally treated with lime, an alkali now shown to make niacin nutritionally available and thereby reducing the chance of developing pellagra.1 However, when in the 18th century corn cultivation was adopted worldwide, treatment with lime was not accepted because the benefit was not understood. Thus in the New World, often heavily dependent on corn, cultivators rarely suffered from pellagra, which became common only when corn became a staple that was eaten without the traditional treatment. Of interest, if maize is not so processed, it is a poor source of tryptophan as well as niacin.


Over 18 million American men over 20 years old suffer from erectile dysfunction, a condition characterized by the inability to keep an erection. It’s a complex disorder brought on by a number of factors, but it’s almost always devastating for the man it affects — causing him to lose confidence in himself and different aspects of his life. The stress it causes can deteriorate relationships and lead to lost productivity at work. Health problems aren’t uncommon either. But there’s good news in all the bad; a new study finds exercise may be a simple way to get things going under the sheets again.

They found that men who exercised the most were also the most likely to have higher scores in sexual function. Specifically, those who expended 18 METS, or metabolic equivalents, per week were most likely to enjoy sex. METS is a physiological measurement that denotes the amount of energy a person spends on a specific activity, as well as the intensity of it. According to the researchers, 18 METS was equal to about two hours of strenuous exercise like running or swimming, 3.5 hours of moderate-intensity exercise, or six hours of light exercise.   

Between 2001–2006, one-third of the US population had insufficient amounts of vitamin D, according to the Institute of Medicine. Risk factors for vitamin D deficiency include obesity and high BMI, not enough sun exposure or outdoor activity, having darker skin and suffering from certain from inflammatory conditions like Crohn’s disease. You can get a blood test to find out if you’re vitamin D deficient.
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