Why people yawn is a mystery. But yawning starts in the womb.
Past studies have used ultrasound images to show fetuses yawning, but some scientists have argued that real yawns were getting confused with fetuses simply opening their mouths.
So Nadja Reissland, a researcher at the University of Durham in the United Kingdom, used a more detailed ultrasound technique to get images of fetal faces that could distinguish a true yawn from just an open mouth.
Originally published on Wed November 21, 2012 1:10 pm
New HIV infections have dropped more than 50 percent across 25 developing countries since 2001, the Joint United Nations Program on HIV/AIDS reported on Tuesday. And, transmission of the virus from mothers to infants has decreased by 24 percent in just the past two years.
Originally published on Wed November 21, 2012 11:01 am
The time has come for the pill to be available over-the-counter, the nation's leading group of obstetricians and gynecologists says.
Why? "There's a 50 percent unintended pregnancy rate in the U.S., which is extremely high for a resource-rich country," says Dr. James T. Breeden, president of the American Congress of Obstetrician and Gynecologists. Easier access to oral contraceptives could go a long way to bringing that number down, he tells Shots.
In Washington, lawmakers are trying to work out a deal to keep the economy from going over the fiscal cliff. Many economists predict those automatic tax hikes combined with deep spending cuts set to go into effect on New Year's Day would throw the economy back into recession.
A group of top CEOs has been urging lawmakers to reach a deal to keep that from happening. Mark Bertolini is one of them. He's CEO of the health insurer Aetna and he said tax increases are as important as spending cuts. We called him to talk more.
Uncle Sam wants you to email your doctor. A federal law passed in 2009 says that physicians have to start offering their patients online communication, or Medicare will start docking how much it pays them in the future.
Some patients hope that having online access to their doctors will mean they can cut down on how often they have to go to the doctor's office. But fresh research suggests that patients with online access actually schedule more office visits.