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Your search has returned 1919 articles:
  • News

    Botox may relieve persistent pelvic pain caused by endometriosis

    For some women with endometriosis, the pain doesn’t stop after surgical and hormonal treatments. It can persist, triggered by muscle spasms that ripple through the pelvic floor. Now, a small study suggests that Botox, best known for smoothing wrinkles, could quell those spasms and relieve that pain.

    Thirteen women diagnosed with the disorder, in which tissue similar to what lines the...

    07/19/2019 - 10:00 Health
  • News

    Manipulating nerve cells makes mice ‘see’ something that’s not there

    Aiming laser lights into mice’s brains can make them “see” lines that aren’t actually there. The results, described online July 18 in Science, represent the first time scientists have created a specific visual perception with laboratory trickery.The work is “technically amazing,” says neuroscientist and psychiatrist Conor Liston at Weill Cornell Medicine in New York City. “I think every...

    07/18/2019 - 14:00 Health, Neuroscience
  • News in Brief

    WHO declares a public health emergency over Congo’s Ebola outbreak

    The World Health Organization has declared Congo’s yearlong Ebola virus outbreak a public health emergency, due to a high risk of the disease spreading to neighboring countries.

    The organization said, however, that it does not consider the outbreak a global threat.

    “Our risk assessment remains that the risk of Ebola spread in the Democratic Republic of Congo and the region remains...

    07/17/2019 - 16:42 Health
  • Science Visualized

    Tiny glasses help reveal how praying mantises can see in 3-D

    A praying mantis depends on precision targeting when hunting insects. Now, scientists have identified nerve cells that help calculate the depth perception required for these predators’ surgical strikes.

    In addition to providing clues about insect vision, the principles of these cells’ behavior, described June 28 in Nature Communications, may also lead to advances in robot vision or other...

    07/12/2019 - 10:00 Health, Neuroscience
  • News

    Here’s the science behind some of your favorite things to do in summer

    Summer brings the heat — and in some cases a lot of it, as those who suffered through record-breaking heat waves in Europe and South Asia in June can attest. But the season also ushers in long days filled with plenty of possibilities for outdoor fun. Parks fill with picnickers. Mountain trails fill with hikers. And beaches and pools swarm with swimmers trying to beat the heat.

    Here’s...

    07/05/2019 - 07:00 Health, Ecology
  • News in Brief

    Rogue immune cells can infiltrate old brains

    Immune cells can storm into the brains of older mice, where these normally helpful cells seem to be up to no good. The result, described July 3 in Nature, raises the possibility that immune cells may have a role in aging.

    Anne Brunet of Stanford University School of Medicine and colleagues studied gene activity to identify all sorts of cells in a particular spot in mice brains — the...

    07/03/2019 - 13:00 Health, Neuroscience
  • News

    California’s new vaccine rules kept more kindergartners up-to-date

    More kindergartners in California were up-to-date on their vaccinations in 2017, following three statewide policies, scientists say.

    Two stricter laws on vaccine exemptions and a school admission policy, enacted from 2014 to 2016, were associated with a decrease in the rate of kindergartners who were behind on required vaccinations for nine diseases including measles, mumps, pertussis...

    07/02/2019 - 11:00 Health
  • News in Brief

    Vision cells can pull double duty in the brain, detecting both color and shape

    Some nerve cells in the brain are multitaskers, responding to both color and shape, a survey of over 4,000 neurons in the visual systems of macaque monkeys finds.

    The finding, described in the June 28 Science, counters earlier ideas that vision cells nestled in the back of the brain each handle information about only one aspect of sight: an object’s color or its orientation, an element...

    07/01/2019 - 13:04 Health, Neuroscience
  • News

    In mice, a high-fat diet cuts a ‘brake’ used to control appetite

    A gut-busting diet may set the brain up for more of the same.

    After mice ate fatty food for just two weeks, cells in their brains that send a “stop eating” signal were quieter than those in mice that didn’t eat high-fat chow, researchers report in the June 28 Science. The result helps untangle the complex relationship between food and appetite, one that can become muddled when people...

    06/27/2019 - 14:00 Health, Neuroscience
  • News

    Antioxidants may encourage the spread of lung cancer rather than prevent it

    Antioxidants, once touted as a cancer preventive, may actually spur the disease’s spread. Now scientists have figured out how.

    Whether taken as a dietary supplement or produced by the body, antioxidants appear to help lung cancer cells invade tissues beyond the chest cavity, two studies report online June 27 in Cell. Experiments in mice and human tissue revealed that antioxidants both...

    06/27/2019 - 11:02 Cancer, Health, Genetics