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MONDAY, June 28, 2021 (HealthDay News) -- COVID-19 infection doesn't reduce the chances of successful fertility treatment in women, a small new study suggests.Concerns have been raised about how the virus affects women's fertility because it invades its target cells by binding to the ACE2 receptor, which is widely expressed in the ovaries, uterus, vagina and placenta, the Spanish researchers explained.Their study followed 46 women who underwent in vitro fertilization (IVF) at 11 clinics in Spain between May and June 2020.The researchers measured the women's hormone levels before they started treatment. That included levels of anti-Mullerian hormone (AMH), a marker of ovarian reserve. Based on their AMH levels, they were classified as normal or low responders to ovarian stimulation...

MONDAY, June 28, 2021 (HealthDay News) -- Most Americans with dementia are undiagnosed, which shows how important it is to screen and assess seniors for the disease, researchers say.Their new analysis of data from a nationwide survey of about 6 million Americans aged 65 and older revealed that 91% of people with cognitive impairment consistent with dementia did not have a formal medical diagnosis of dementia or Alzheimer's disease.When other people (generally, family members) responded to the survey, the rate fell to around 75%, which is still significant, said study co-author Sheria Robinson-Lane. She is a gerontologist at the University of Michigan School of Nursing, in Ann Arbor.Rates of non-diagnosis varied by race, gender and education. For example, Black seniors had a higher rate...

MONDAY, June 28, 2021 (HealthDay News) -- Could trees be the key to a cool summer in the city?Yes, claims new research that calculated just how much greenery can bring temperatures down."We've long known that the shade of trees and buildings can provide cooling," said study co-author Jean-Michel Guldmann. He is a professor emeritus of city and regional planning at Ohio State University, in Columbus. "But now we can more precisely measure exactly what that effect will be in specific instances, which can help us make better design choices and greening strategies to mitigate the urban heat island effect," Guldmann said in a university news release.For the study, his team created a 3D digital model of a nearly 14-square-mile area of northern Columbus to assess the effect that shade from...

MONDAY, June 28, 2021 (HealthDay News) -- Being in a Spanish-speaking home doesn't hamper American kids' ability to learn English, new research shows. The first-of-its-kind study included 126 U.S.-born 5-year-olds who were exposed to Spanish at home from birth, along with varying amounts of English.Researchers found that the kids not only learn English reliably, their total language knowledge is greater to the degree that they also acquire Spanish."We found that early in development, children who hear two languages take a little longer to acquire each language than children who hear only one language; however, there is no evidence that learning two languages is too difficult for children," said study leader Erika Hoff, director of the Language Development Lab at Florida Atlantic...