Study: Viagra reduces heart stress

Oct 25, 2005

Johns Hopkins University scientists say they've found Viagra is effective in reducing stress on one's heart by half.

The Baltimore researchers said while Viagra, sildenafil citrate, is more widely known for helping genital blood vessels expand to maintain an erection and, more recently, as a treatment for pulmonary hypertension, it has been thought to have little direct effect on the human heart.

The recent study suggests sildenafil blunts the strengthened heart beat caused by chemically induced stress, thereby lessening the excess amount of blood and force used to pump it to the body, according to study senior author Dr. David Kass, a Johns Hopkins cardiology professor.

The findings, which appear in the online journal Circulation, are believed to be the first confirmation in humans that sildenafil has a direct effect on the heart. Previous research by Kass and his team showed sildenafil had such effects in mice. Related research by the group also showed sildenafil prevents and reverses long-term effects in the heart from chronic high blood pressure.

Kass said his latest study confirms sildenafil helps control heart function only when the heart is under duress, but has little impact under normal conditions.

Copyright 2005 by United Press International

Explore further: Physicists create tool to foresee language destruction impact and thus prevent it

add to favorites email to friend print save as pdf

Related Stories

Physicists discuss quantum pigeonhole principle

3 hours ago

The pigeonhole principle: "If you put three pigeons in two pigeonholes at least two of the pigeons end up in the same hole." So where's the argument? Physicists say there is an important argument. While the ...

Giant crater in Russia's far north sparks mystery

5 hours ago

A vast crater discovered in a remote region of Siberia known to locals as "the end of the world" is causing a sensation in Russia, with a group of scientists being sent to investigate.

NASA Mars spacecraft prepare for close comet flyby

6 hours ago

NASA is taking steps to protect its Mars orbiters, while preserving opportunities to gather valuable scientific data, as Comet C/2013 A1 Siding Spring heads toward a close flyby of Mars on Oct. 19.

Giant anteaters kill two hunters in Brazil

6 hours ago

Giant anteaters in Brazil have killed two hunters in separate incidents, raising concerns about the animals' loss of habitat and the growing risk of dangerous encounters with people, researchers said.

Recommended for you

Affirmative action elicits bias in pro-equality Caucasians

Jul 25, 2014

New research from Simon Fraser University's Beedie School of Business indicates that bias towards the effects of affirmative action exists in not only people opposed to it, but also in those who strongly endorse equality.

Narcissistic CEOs and financial performance

Jul 24, 2014

Narcissism, considered by some as the "dark side of the executive personality," may actually be a good thing when it comes to certain financial measures, with companies led by narcissistic CEOs outperforming those helmed ...

Election surprises tend to erode trust in government

Jul 24, 2014

When asked who is going to win an election, people tend to predict their own candidate will come out on top. When that doesn't happen, according to a new study from the University of Georgia, these "surprised losers" often ...

User comments : 0