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Showing posts from October 13, 2016

Blast from the past: comet may have hit Earth 56 million years ago

By Will Dunham WASHINGTON (Reuters) - Droplets of glass dug up in New Jersey and from the Atlantic seabed indicate a comet or some other extraterrestrial object may have smacked Earth 56 million years ago, roughly 10 million years after the asteroid impact that doomed the dinosaurs. The tiny spherical bits of dark glass, called microtektites, represent strong evidence of a collision with a comet or asteroid, the researchers said.


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How Accurate Are Fitness Tracker Heart Rate Monitors?

Fitness trackers with heart-rate monitors are popular these days, but how accurate are they, really? A new study put these devices to the test, and the heart-rate monitors' scores were not stellar — some of these wrist-worn heart-rate monitors were more accurate than others, but not one was as accurate as a chest strap monitor, the researchers found. "If you really must know your heart rate accurately — whether that's for health or training — a chest strap with an electrode is best," Gillinov told Live Science.


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Promising Ebola Drug ZMapp: The Real Lessons of an Inconclusive Study

In the midst of the 2014 Ebola outbreak, a drug called ZMapp was one of the most promising treatments for the disease. Rather than providing an answer to whether ZMapp can really cut the risk of death from Ebola, the results are inconclusive. The researchers did find that a smaller percentage of people who were treated with ZMapp died from Ebola, compared with people who didn't receive the drug.


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Many Parents Who Think They Have Food Allergies Actually Don't

When kids have food allergies, the children's parents may think they have food allergies too, but this is often not the case, a new study found. The study, which involved only parents of kids with food allergies, showed that many parents who reported also having food allergies didn't actually have any. The findings are also surprising, given that parents whose children have food allergies might be expected to have more knowledge than people in general about what counts as a food allergy, the researchers said.


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Supplement Trends: Multivitamin Use Down, Probiotics & Vitamin D Up

About 1 in 2 American adults — or 52 percent of them — takes a dietary supplement, a new study suggests. Although this overall percentage of Americans taking supplements has not changed in recent years, there were changes during the 13-year study period in which supplements people take, the researchers found. Adults taking a multivitamin/multimineral product fell from 37 percent in 1999 to 31 percent in 2012, according to the findings, published today (Oct. 11) in The Journal of the American Medical Association (JAMA).


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Deadly Mixture: Scientists Uncover Harmful Drug Interactions

Millions of Americans take more than one prescription drug, and often times doctors don't know which drugs, when combined, can cause serious illness or death. Sadly, such warnings come only after the damage is done, when enough clear reports of adverse reactions begin to emerge. Now, scientists at Columbia University in New York have harnessed the power of data science to identify two common prescription drugs that, if mixed, can have deadly consequences.


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The Demon on Your Chest and Other Terrifying Tales of Sleep Paralysis

An unusual condition called sleep paralysis has been frightening people for centuries, and now a new review sums up the many creepy stories from different cultures that try to explain the episodes of waking up and being unable to move. The biological explanation of sleep paralysis is that two aspects of REM sleep — dreaming and paralysis — are occuring while a person is awake, said Brian Sharpless, an associate professor of clinical psychology at Argosy University in Washington, D.C., who was not involved with the review. Sleep paralysis occurs more often than most people think, and it is more likely to occur when a person is waking up than during other parts of sleep, he said.


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