Researchers presented evidence Wednesday for the existence of cancer stem cells, with three different studies seeking to end a decades-old scientific dispute about how tumors grow.
The discovery should lead to new drugs targeting stem cells that cause tumors to reappear after cancer therapy, the teams argued in three scientific papers published simultaneously in the journals Nature and Science.Full Story
Children who suffer or witness physical abuse undergo changes to their brain structure that may predispose them to depression and substance abuse later in life, a study said Wednesday.
The finding holds promise for early detection and pre-emptive counseling already in adolescence -- a crucial phase of physical and emotional development and brain maturation, say researchers in the United States.Full Story
The World Food Program has sent supplies to Syria's commercial capital Aleppo to help tackle shortages triggered by escalating clashes between troops and rebels, the U.N. agency said on Wednesday.
The WFP "has sent food assistance for distribution to 28,000 people in Aleppo over the next few days, following reports of shortages of food, gas and electricity following weeks of violence," a statement said.Full Story
New York Mayor Michael Bloomberg has a message for new mothers: Breast-feed your baby, if possible.
Starting in September, dozens of city hospitals will ask mothers of newborns to listen to talks about why their breast milk is better than the sample formulas many hospitals offer for free. Then the women can decide for themselves, says the mayor.Full Story
Kampala residents have been urged to avoid contact after the deadly Ebola virus hit the city but security guard Joseph Karuba's job is to frisk people and he doesn't have gloves.
"The thing has come back -- it came first time and we beat it, then it came again and we beat it and now it is back," he said, waiting for shoppers outside one of the teeming capital's malls.Full Story
It sounds like an unfolding epidemic: A decade ago, virtually no one in the U.S. seemed to have a problem eating gluten in bread and other foods. Now, millions do.
Gluten-free products are flying off grocery shelves, and restaurants are boasting of meals with no gluten. Celebrities on TV talk shows chat about the digestive discomfort they blame on the wheat protein they now shun. Some churches even offer gluten-free Communion wafers.Full Story
A new kind of bird flu has been causing deadly pneumonia in baby seals off the northeastern U.S. coast and could pose a risk to humans, according to U.S. research released Tuesday.
The new strain has been named avian H3N8, and is blamed for the deaths of 162 seals along the U.S. coastlines last year, said the study in mBio, a journal of the American Society for Microbiology.Full Story
Arizona's ban on abortions starting at 20 weeks of pregnancy is poised to take effect this week after a federal judge ruled Monday that the new law is constitutional.
U.S. District Judge James Teilborg says the statute may prompt a few pregnant women who are considering abortion to make the decision earlier. But he says the law is constitutional because it doesn't prohibit any women from making the decision to end their pregnancies.Full Story
Long viewed as a contributing factor in teenage isolation, computer games are now being used to treat adolescent depression in an innovative New Zealand program.
Rather than simply encouraging players to engage in mindless destruction, the SPARX video game attempts to teach teenagers how to deal with depression using a psychological approach known as cognitive behavioral therapy (CBT).Full Story
Bayer, the German maker of Aspirin, said litigation costs connected with its Yasmin oral contraceptive hit its bottom line in the second quarter but it remained confident for the full year.
Bayer said in a statement its net profit declined 34 percent to 494 million euros ($606 million) in the period from April to June.Full Story