June 30th, 2014
01:33 PM ET
It’s called sexting, the act of sending and/or receiving sexually explicit text or photo messages via your mobile phone. And one in five middle school-aged students are doing it, according to a new study published in the medical journal Pediatrics.
Among the 1,285 Los Angeles students aged 10 to 15 surveyed for the study, 20% reported having received at least one sext, while 5% reported having sent at least one sext.
“Very frequently it’s the image or the sex, that is finding its way to the middle schooler first, prior to any sort of conversation or education" by parents, said Ian Kerner, a sexuality counselor and father to two boys. "That makes it even more confusing (for kids).”
The study authors also looked at how sexting relates to sexual behavior among these adolescents. The survey showed that those who reported receiving a sext, were six times more likely to report being sexually active than teens who hadn't received a sext. Those who sent a sext were about 4 times more likely to report being sexually active.
June 20th, 2014
03:05 PM ET
Here's a roundup of five medical studies published this week that might give you new insights into your health, mind and body. Remember, correlation is not causation – so if a study finds a connection between two things, it doesn't mean that one causes the other.
You are the (Facebook) company you keep
It may be time to think twice before accepting that friend request on Facebook. A new study by scientists at Cornell University and Facebook suggests that emotions can be spread via Facebook and other social networks. Yes, you read that right: Your Facebook posts are contagious. The scientists looked at 3 million Facebook posts from a group of 155,000 randomly selected users.
June 17th, 2014
10:49 AM ET
If you’re spending a lot of time sitting every day, either in front of the TV or at work, you may be at higher risk for developing certain types of cancer, according to new research published this week in the Journal of the National Cancer Institute.
The study found an additional two hours a day of sedentary behavior was linked to an 8% increase in colon cancer risk, a 10% increase in endometrial cancer risk and a 6% increase in risk for lung cancer. It did not find the same connection for breast, rectum, ovary and prostate cancers or for non-Hodgkin lymphoma.
Researchers came to these conclusions by analyzing 43 existing studies - that included more than 4 million study participants and 68,936 cancer cases - to measure the relationship between hours spent sitting and certain types of cancers.
June 10th, 2014
04:52 PM ET
The cause of autism is still unknown, but researchers hope harnessing the power of Google will help them solve this neurodevelopmental puzzle.
The research and advocacy group Autism Speaks announced Tuesday they are collaborating with the Google Cloud Platform to build the largest autism genome database to date. The collaboration, known as The Autism Speaks Ten Thousand Genomes Program (AUT10K), will combine extensive DNA databases with cloud storage technology, in hopes of moving mountains in autism research, according to a press release.
Autism Speaks believes the AUT10K program holds the potential to radically transform ASD genomics research. “Working with Google is a game-changer,” said Rob Ring, who is the organization’s chief science officer.
This collaboration is part of a larger movement in the medical field to use big data to speed research efforts. IBM's supercomputer Watson, for instance, is helping oncologists find treatments for a rare aggressive brain cancer in partnership with the New York Genome Center.
Autism Speaks has already donated 12,000 DNA samples, which members describe as the “the largest private collection” with diagnostic and specific genetic information. The organization says the collaboration with Google will allow them to provide researchers access to what will eventually be huge amounts of data. This, in turn, should help researchers find connections between patients faster.
Zachary Warren, director of Vanderbilt University’s autism research institute, says in order to understand the vast developmental and behavioral differences linked to ASD, more powerful platforms to analyze genetic data are needed.
“Only by understanding autism risk can we begin to develop treatments that target not just the symptoms but the root causes of autism spectrum disorder," his colleague and genetic autism researcher Dr. Jeremy Veenstra-VanderWeele said in agreement.
The number of children with autism has continued to go up over the past decades, as have the costs for caring for someone with ASD.
Earlier this year, the CDC reported that 1 in 68 children in the United States has autism. A new study, published Monday in JAMA Pediatrics, estimates the lifetime cost of supporting an individual with ASD can be up to $2.4 million.
About this blog
Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.