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  • News

    A single sweaty workout may boost some people’s memory

    SAN FRANCISCO — For some older people, the brain boosts from exercise can be almost immediate. Improvements in their thinking abilities after a single 20-minute bout of pedaling a stationary bike mirrored those produced by three months of regular exercise, according to a preliminary study presented March 24 at the annual meeting of the Cognitive Neuroscience Society. 

    In addition to...

    03/26/2019 - 06:00 Health, Neuroscience
  • News

    Edibles are tied to more severe health issues than smoking marijuana

    After Colorado voted to legalize marijuana in 2012, doctors in Denver noticed a surprising trend. Most people who visited the emergency room for cannabis-related complaints had smoked the drug. But those who ingested the drug were more likely to suffer more severe effects, including psychiatric symptoms and heart problems.

    Edibles — marijuana-laced products such as brownies, cookies and...

    03/25/2019 - 17:25 Health
  • News

    Signs of new nerve cells spotted in adult brains

    A tweaked laboratory protocol has revealed signs of thousands of newborn nerve cells in the brains of adults, including an octogenarian. 

    These immature neurons, described online March 25 in Nature Medicine, mark the latest data points in the decades-old debate over whether people’s brains churn out new nerve cells into adulthood. The process, called neurogenesis, happens in the brains...

    03/25/2019 - 12:00 Health, Neuroscience
  • Science Visualized

    U.S. fentanyl deaths are rising fastest among African-Americans

    Since people in the United States began dying in the fentanyl-related drug overdose epidemic, whites have been hit the hardest. But new data released March 21 by the Centers for Disease Control and Prevention show that African-Americans and Hispanics are catching up.

    Non-Hispanic whites still experience the majority of deaths involving fentanyl, a synthetic opioid. But among African-...

    03/22/2019 - 13:17 Health
  • News

    Saving monkey testicle tissue before puberty hints at a new way to preserve fertility

    A technique with the potential to preserve fertility for prepubescent boys stricken with cancer has passed a key test in experiments conducted in monkeys: the birth of a healthy infant.

    Testicle tissue samples from rhesus macaques that hadn’t reached puberty were removed, frozen and then grafted back onto the monkeys. Over the following year, as the monkeys went through puberty, the...

    03/21/2019 - 14:26 Health
  • News

    A new ketamine-based antidepressant raises hope — and questions

    With great fanfare, a new antidepressant entered the U.S. market in March, the first fundamentally new medicine for depression in decades. Based on the anesthetic ketamine, the drug — called Spravato — is intended to help people with severe depression quickly, taking effect within hours or days instead of the weeks that typical antidepressants take. But for all the hubbub, big questions have...

    03/21/2019 - 07:00 Health, Neuroscience
  • News in Brief

    U.S. heart attack mortality reached a two-decade low in 2014

    Heart-healthy changes to diet and exercise along with a national focus on improving treatment and recovery from heart attacks appears to be making a difference.

    Fewer older adults are having heart attacks, and fewer of those who do die as a result, according to an analysis of more than 4.3 million U.S. Medicare patients that spanned two decades up to 2014.

    The percentage of...

    03/15/2019 - 11:30 Health
  • News

    Flickers and buzzes sweep mouse brains of Alzheimer’s plaques

    Fast clicking sounds can boost brainpower in mice with signs of Alzheimer’s disease. Like flickering lights, these external sounds spur a type of brain wave that seemed to sweep disease-related plaques from mice’s brains, researchers report in the March 14 Cell.It’s too early to say whether the same sorts of flickers and clicks could help people with Alzheimer’s. If so, the treatment would...

    03/14/2019 - 11:00 Health, Neuroscience
  • News

    Hidden compounds in many medications can trigger allergies

    For some patients, the so-called inactive ingredients in pills may be more active than previously thought.

    Every pill contains a pharmaceutical drug with some therapeutic effect on the body, as well as a mixture of inactive compounds added to boost the medication’s effectiveness or simply to make the pill more palatable. Inactive ingredients are generally considered harmless. But many...

    03/13/2019 - 14:00 Health
  • Science Stats

    Pharmaceutical abuse sent more than 350,000 people to the ER in 2016

    The misuse of prescription drugs and over-the-counter medications resulted in an estimated 358,000 trips to U.S. emergency departments in 2016 — and almost half of those cases involved young people ages 15 to 34, according to a new study based on a national public health surveillance system.  

    The analysis, reported online March 6 in the American Journal of Preventive Medicine, was based...

    03/13/2019 - 07:00 Health