There are many causes of impotence, including medical conditions such as high blood pressure or diabetes and psychological issues. If a person’s impotence is due to a medical condition, it is important to understand that Viagra will not improve the condition that is causing the impotence such as high blood pressure. In this case, it is likely that a man will continue to need to use Viagra. This does not mean he is dependent on Viagra; it simply means that he is continuing to have a problem with impotence.

Viagra does not cause any long-term changes in sexual function. It works temporarily to increase blood flow to the penis. This will not affect a man’s ability to perform sexually in the future. In fact, if his impotence is related to performance anxiety about sexual activity, it is possible that Viagra might give him the confidence to overcome his problems with impotence.

Viagra Addiction
Men do not need to worry about becoming dependent upon Viagra. Viagra is not addicting and does not cause long-term changes in sexual function. While a man may continue to need Viagra to achieve an erection, this does not mean he is addicted. It simply means that he still has problems with impotence

Many of us interested in whether nicotine alone would affect sex drive.
Impotence has been induced by an intravenous injection of nicotine into dogs.

Nicotine could damage the blood vessels in the long run, thereby reducing smoker’s ability to have sex. However, new research suggests that when isolated from other harmful substances contained in cigarettes nicotine actually promotes the growth of healthy blood vessels.

Nicotine is, however a vasoconstrictor, which means it narrows the blood vessels. Theoretically at least, this should reduce men’s ability to have sex, and would even reduce arousal in a women.

While most studies (including some which conclude nicotine has a negative effect on the sex drive) actually test the effect of cigarettes on impotence, impotence has been induced by an intravenous injection of nicotine into dogs.

Of course, dogs are not human and an injection is not smoking. However, a second study gave non-smokers nicotine gum to chew while watching erotic movies. The study found that nicotine can have a significant effect on sexual arousal when watching porn.

Nicotine compresses arteries to make them narrower. When your arteries conducting to your heart are totally blocked, then you bear the problem of heart attack.

The researcher says that a person who is smoking 20 cigarettes a day, would have increased 39% his risk of impotence. Cigarettes contain nicotine that affects people. Nicotine in the blood promotes the vein chamber to dilate. Heart attack and lung cancer are also the major causes of smoking hence smoking can cause impotence.

Viagra-Work

1. Enhance the amount of nitric oxide (NO) produced in the penis

2. Enhance the amount of cyclic guanosine monophosphate (cGMP) developed in the penis in response to the NO

3. Eliminate the phosphodiesterase 5 (PDE) in the penis so the cGMP develops instead of being decomposed by the PDE

Viagra gets rid of the PDE so cGMP develop in the penis and has a greater impact on the artery walls. The greater the amount of cGMP, the greater the blood flow; the greater the blood flow the greater the strength of the erection. Viagra uses this routine because of an interesting quirk of PDE.

Unique PDE of Viagra

The human body produces at least 11 different types of PDE. Only one of those types of PDE (PDE5) is found in the penis. Once scientists noted this, the development of Viagra was relatively straightforward. Pfizer studied a chemical that would play a significant part in blocking PDE5 and nothing else. With the PDE5 blocked, cGMP could develop in the penis and enhance the blood flow there with no bearing on the other parts of the body. Were it not for this unique kind of PDE, there would be no Viagra.

Sildenafil citrate

PDE5 is an enzyme, a specially folded protein that plays a significant role in chemical reaction). PDE5 accepts cGMP and breaks it down. Pfizer needed a chemical that would not only hold PDE5 and keep it from doing its job. The chemical that Pfizer come up with is called sildenafil citrate. It fits right an outlet on the PDE5 enzyme and disables it.

Viagra consists of sildenafil citrate packaged as a pill. When a man takes a Viagra pill, the sildenafil citrate flows throughout his body, but has an impact only on the PDE5 enzyme in the penis. Viagra’s presence is felt in the bloodstream for about four hours, after which it is washed out of the blood by the liver and kidneys.
Expectations on effectiveness of viagra

In a research, more than 80% of men with ED had improved erections with the help of Viagra. More importantly, Viagra can work irrespective of your age or the severity of your ED.

Cycling is an Olympic Sport famous for its trills and passion. Cycling is an activity that many men and women do on daily basis to reach their offices or colleges. It would be really a heart breaking news to all the male cyclists if it is proved that cycling is making them impotent. To study the effect of Cycling a study was conducted in which 200 men cycling daily participated. Erectile dysfunction was noted among only those men who did vigorous cycling i.e. more than 3 to 4 hours daily. Thus, it is good news for all the cyclists that an hour of cycling daily will not harm their sexual health. But, it is always better to take the precautions, so do the cycling but only for 20 to 30 minutes for the best possible results.

Cycling is a very good sport for the health, this is what we have heard from our childhood, but according to the latest study Cycling can damage your sexuality permanently. Cycling can maintain your health and make you healthier, but by damaging your sexuality. Cycling is found to reduce the risk of cardiovascular ailments, but it may induce the risk factor of suffering with erectile dysfunction or perineal-genital paresthesia. Cycling is the age-old sport practiced throughout the world. Cycling truly one of its kind of sport that improves the health of the individual considerably, but according to the latest research it damages the sexual health of an individual considerably. According to the latest study, man who cycles continuously for more than 3 hours on habitual basis is found to adhere to the problems like erectile dysfunction in his life.

Long distance cycling causes temporary genital numbness as the common side effect sometimes it may even lead to the impotence in the men, if the long distance cycling is continued on regular basis. Erectile dysfunction in the men because of cycling is caused by the continuous movement of the legs that causes the friction in between the penis and legs that damages the penile muscles or even the arteries that supply blood to the penis. Another important reason that results into the impotence in the men is the formation of the bicycle seats. Continuous sitting on these seats causes compression of perineal arteries with a consequent significant decrease in penile perfusion. Reduced oxygen tension leads to penile fibrosis, which works counterproductively to the achievement of an erection that finally leads to the erectile dysfunction in men. However, in the genesis of the erectile dysfunction of the cyclist, apart from the above-mentioned factors, an “individual predisposition to developing erectile dysfunction” linked to the perineal-genital anatomy (i.e. type of insertion of the perineum into the root of the penis, number of layers of the tunica albuginea of the corpus cavernosum) cannot be excluded.

During the study it was noted that majority of the professional cyclist suffer with the erectile dysfunction and are unsatisfied with their sexual life. But, there are few chances for these cyclist to avoid the erectile dysfunction by changing the shapes of there seats from V shaped hard seats to normal smooth seats that supply the proper oxygen to the penis. Even the new speed gears can be introduced to the cycles that will reduce the continuous fiction in the legs. They can also wear the shorts that are quite loose and have a persistent supply of air to their inner parts. `It was possible to demonstrate that the most important factor in safeguarding penile perfusion is not the amount of padding, but rather a saddle width which prevents sufficiently the compression of the perineal arteries.

In another study the cyclists who were suffering with erectile dysfunction were asked to change their seats and add extra gears to the bicycle. Then these cyclists were asked about their sex life after 2 months of practice on bicycles with smooth seats, extra gears, and by wearing a quite lose and comfortable shorts that allowed the air to flow to the penis. The study concluded that there was a improvement in the erectile function of these men. Hence, avoid the excessive cycling to maintain your sexual health.