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    Poverty may hinder kids’ brain development, study says

    Reduced gray matter, lower test scores reported for poor children

July 20, 2015

    Poverty appears to affect the brain development of children, hampering the growth of gray matter and impairing their academic performance, researchers report. Poor children tend to have as much as 10 percent less gray matter in several areas of the brain associated with academic skills, according to a study published July 20 in JAMA Pediatrics. “We used to think of poverty as a ‘social’ issue, but what we are learning now is that it is a biomedical issue that is affecting brain growth,” said senior study author Seth Pollak, a professor of psychology, pediatrics, anthropology and neuroscience at the University of Wisconsin-Madison.

   The results could have profound implications for the United States, where low-income students now represent the majority of kids in public schools, the study authors said in background information. Fifty-one percent of public school students came from low-income families in 2013.

    Previous studies have shown that children living in poverty tend to perform poorly in school, the authors say. They have markedly lower test scores, and do not go as far in school as their well-off peers.

    To see whether this is due to some physical effect that poverty might have on a child’s brain, Pollak and his colleagues analyzed MRI scans of 389 typically developing kids aged 4 to 22, assessing the amount of gray matter in the whole brain as well as the frontal lobe, temporal lobe and hippocampus. “Gray matter contains most of the brain’s neuronal cells,” Pollak said. “In other words, other parts of the brain – like white matter – carry information from one section of the brain to another. But the gray matter is where seeing and hearing, memory, emotions, speech, decision making and self-control occur.”

    Children living below 150 percent of the federal poverty level – US$ 36,375 for a family of four – had 3 percent to 4 percent less gray matter in important regions of their brain, compared to the norm, the authors found. Those in families living below the federal poverty level fared even worse, with 8 percent to 10 percent less gray matter in those same brain regions. The federal poverty level in 2015 is US$ 24,250 for a family of four. These same kids scored an average of four to seven points lower on standardized tests, the researchers said.

    The team estimated that as much as 20 percent of the gap in test scores could be explained by reduced brain development. A host of poverty-related issues likely contribute to developmental lags in children’s brains, Pollak said. Low-income kids are less likely to get the type of stimulation from their parents and environment that helps the brain grow, he said. For example, they hear fewer new words, and have fewer opportunities to read or play games. Their brain development also can be affected by factors related to impoverishment, such as high stress levels, poor sleep, crowding and poor nutrition, Pollak said.

    This study serves as a call to action, given what’s already known about the effects of poverty on child development, said Dr. Joan Luby, a professor of child psychiatry at Washington University School of Medicine in St. Louis. “The thing that’s really important about this study in the context of the broader literature is that there really is enough scientific evidence to take public health action at this point,” said Luby, who wrote an editorial accompanying the study. “Poverty negatively affects brain development, and we also know that early interventions are powerfully effective,” Luby said. “They are more effective than interventions later in life, and they also are cost-effective.”

(www.nlm.nih.gov. Adaptado.)

                                  Why so few nurses are men

      Ask health professionals in any country what the biggest problem in their health-care system is and one of the most common answers is the shortage of nurses. In ageing rich countries, demand for nursing care is becoming increasingly insatiable. Britain’s National Health Service, for example, has 40,000-odd nurse vacancies. Poor countries struggle with the emigration of nurses for greener pastures. One obvious solution seems neglected: recruit more men. Typically, just 5-10% of nurses registered in a given country are men. Why so few?

      Views of nursing as a “woman’s job” have deep roots. Florence Nightingale, who established the principles of modern nursing in the 1860s, insisted that men’s “hard and horny” hands were “not fitted to touch, bathe and dress wounded limbs”. In Britain the Royal College of Nursing, the profession’s union, did not even admit men as members until 1960. Some nursing schools in America started admitting men only in 1982, after a Supreme Court ruling forced them to. Senior nurse titles such as “sister” (a ward manager) and “matron” (which in some countries is used for men as well) do not help matters. Unsurprisingly, some older people do not even know that men can be nurses too. Male nurses often encounter patients who assume they are doctors.

      Another problem is that beliefs about what a nursing job entails are often outdated – in ways that may be particularly off-putting for men. In films, nurses are commonly portrayed as the helpers of heroic male doctors. In fact, nurses do most of their work independently and are the first responders to patients in crisis. To dispel myths, nurse-recruitment campaigns display nursing as a professional job with career progression, specialisms like anaesthetics, cardiology or emergency care, and use for skills related to technology, innovation and leadership. However, attracting men without playing to gender stereotypes can be tricky. “Are you man enough to be a nurse?”, the slogan of an American campaign, was involved in controversy.

      Nursing is not a career many boys aspire to, or are encouraged to consider. Only two-fifths of British parents say they would be proud if their son became a nurse. Because of all this, men who go into nursing are usually already closely familiar with the job. Some are following in the career footsteps of their mothers. Others decide that the job would suit them after they see a male nurse care for a relative or they themselves get care from a male nurse when hospitalised. Although many gender stereotypes about jobs and caring have crumbled, nursing has, so far, remained unaffected.

                                              (www.economist.com, 22.08.2018. Adaptado.)