A slice of cool, fresh watermelon has effects similar to Viagra, researchers say.
Watermelons contain an ingredient called citrulline that can trigger production of a compound that helps relax the body’s blood vessels, similar to what happens when a man takes Viagra, said scientists in Texas, one of the US’ top producers of the seedless variety.
Found in the flesh and rind of watermelons, citrulline reacts with the body’s enzymes when consumed in large quantities and is changed into arginine, an amino acid that benefits the heart and the circulatory and immune systems.
“Arginine boosts nitric oxide, which relaxes blood vessels, the same basic effect that Viagra has, to treat erectile dysfunction and maybe even prevent it,” said Bhimu Patil, a researcher and director of Texas A&M’s Fruit and Vegetable Improvement Center. “Watermelon may not be as organ-specific as Viagra, but it’s a great way to relax blood vessels without any drug side effects.”
Todd Wehner, who studies watermelon breeding at North Carolina State University, said anyone taking Viagra shouldn’t expect the same result from watermelon.
“It sounds like it would be an effect that would be interesting but not a substitute for any medical treatment,” Wehner said.
The nitric oxide can also help with angina, high blood pressure and other cardiovascular problems, said the study, which was paid for by the US Department of Agriculture.
More citrulline — about 60 percent — is found in watermelon rind than in the flesh, Patil said, but that can vary. But scientists may be able to find ways to boost the concentrations in the flesh, he said.
Citrulline is found in all colors of watermelon and is highest in the yellow-fleshed types, said Penelope Perkins-Veazie, a USDA researcher in Lane, Oklahoma.
She said Patil’s research is valid, but with a caveat: One would need to eat about six cups of watermelon to get enough citrulline to boost the body’s arginine level.
“The problem you have when you eat a lot of watermelon is you tend to run to the bathroom more,” Perkins-Veazie said.
Watermelon is a diuretic and was a homeopathic treatment for kidney patients before dialysis came into widespread use.
Another issue is the amount of sugar that much watermelon would spill into the bloodstream — a jolt that could cause cramping, Perkins-Veazie said.
Patil said he would like to do future studies on how to reduce the sugar content in watermelon.
The relationship between citrulline and arginine might also prove helpful to those who are obese or suffer from type-2 diabetes. The beneficial effects — among them the ability to relax blood vessels, much like Viagra does — are beginning to be revealed in research.
Citrulline is present in other curcubits, such as cucumbers and cantaloupe, at very low levels.
School bullies in Singapore are to face caning under new guidelines, but the education minister on Tuesday said it would be meted out only as a last resort with strict safeguards. Human rights groups regularly criticize Singapore for the use of corporal punishment, which remains part of the school and criminal justice systems, but authorities have defended it as a deterrent to crime and serious misconduct. Caning was discussed in the parliament after legislators asked how it would be used in relation to bullying in schools. The debate followed stricter guidelines on serious student misconduct, including bullying, unveiled by the Singaporean Ministry of
‘GROSS NEGLIGENCE?’ Despite a spleen typically being significantly smaller than a liver, the surgeon said he believed Bryan’s spleen was ‘double the size of what is normal’ A Florida surgeon who is facing criminal charges after allegedly removing a patient’s liver instead of his spleen has said he is “forever traumatized” by that person’s death. In a deposition from November last year that was recently obtained by NBC, 44-year-old Thomas Shaknovsky described the death of 70-year-old William Bryan as an “incredibly unfortunate event that I regret deeply.” Bryan died after the botched surgery; and last month, a grand jury in Tallahassee indicted Shaknovsky on a charge of manslaughter. “I’m forever traumatized by it and hurt by it,” Shaknovsky added, also saying that wrong-site surgeries can happen “during
A MESSAGE: Japan’s participation in the Balikatan drills is a clear deterrence signal to China not to attack Taiwan while the US is busy in the Middle East, an analyst said The Japan Self-Defense Forces yesterday fired a Type 88 anti-ship missile during a joint maritime exercise with US, Australian and Philippine forces, hitting a decommissioned Philippine Navy ship in waters facing the disputed South China Sea, in drills that underscore Tokyo’s rising willingness to project military power on China’s doorstep. The drill took place as Manila and Tokyo began talks on a potential defense equipment transfer, made possible by Japan’s decision to scrap restrictions on military exports. The discussions include the possible early transfer of Abukuma-class destroyers and TC-90 aircraft to the Philippines, Japanese Minister of Defense Shinjiro Koizumi said. Philippine Secretary of
A South Korean judge who last week more than doubled former South Korean first lady Kim Keon-hee’s prison sentence was found dead yesterday, police said. Shin Jong-o was found unconscious at about 1am at the Seoul High Court building, an investigator at the Seocho District Police Station in Seoul said. Shin was taken to a hospital and pronounced dead, he said. “There is no sign of foul play in the death,” the investigator added. Local media reported that Shin had left a suicide note, but the investigator said there was none. On Tuesday last week, Shin presided over 53-year-old Kim’s appeal trial, finding her guilty
RSS