The brain edits memories of the past, updating them with new information. Scientists say this may help us function better in the present. But don't throw those photos away.
The researchers used scenes like this to test memory. When an object's location and a background scene are presented together, they are remembered as a whole event (top). But when new information is presented, like a new location for the small object, that new location is tied to the old scene (bottom).
Originally published on Thu February 6, 2014 7:04 am
Think about your fifth-birthday party. Maybe your mom carried the cake. What did her face look like? If you have a hard time imagining the way she looked then rather than how she looks now, you're not alone.
The brain edits memories relentlessly, updating the past with new information. Scientists say that this isn't a question of having a bad memory. Instead, they think the brain updates memories to make them more relevant and useful now — even if they're not a true representation of the past.
Originally published on Wed February 5, 2014 1:41 pm
Young people in their teens and early 20s probably aren't thinking about heart disease. But maybe it's time they did.
People who have slightly higher blood pressure when they're 18 to 25 are more likely to have high blood pressure and hardening of the arteries in their 40s, a study says. About one quarter of the people in this study were in that group.
When it comes to persuading teenagers not to smoke, you have to think short-term, the Food and Drug Administration says.
"While most teens understand the serious health risks associated with tobacco use, they often don't believe the long-term consequences will ever apply to them," FDA Commissioner Margaret Hamburg told reporters Monday before unveiling the agency's first-ever anti-smoking campaign.
Sure, you think, my kid's on a football team. That takes care of his exercise needs, right? Probably not.
"There are these bursts of activity," says Jim Sallis, a professor of family and preventive medicine at the University of California, San Diego. "But if you think about it, one hour of playing football out on the field means that the vast majority of that time is spent standing around waiting for the next play."
Originally published on Mon February 3, 2014 10:39 am
Abortions in the U.S. resumed their downward trend between 2008 and 2011, according to a new study. But its authors say the recent surge of state laws intended to restrict the procedure is likely not the reason.
A lot of parents like to think their kids will simply outgrow baby fat. But the risk of becoming a severely overweight adult can actually start as early as kindergarten, research suggests.
"As parents, as a society, as clinicians, we need to think about a healthy weight really early on," says Solveig Cunningham, who led the study. But that doesn't mean putting young children on calorie-restricted diets.
Originally published on Thu January 30, 2014 10:11 am
Exercise helps recovery after cancer treatment, but fatigue can make working out hard. Yoga can help reduce fatigue for breast cancer survivors, a study finds. It's one of a growing number of efforts using randomized controlled trials to see if the ancient practice offers medical benefits.
Women who took a yoga class three hours a week for three months reported less fatigue compared with a group of breast cancer survivors who did not do yoga.