Protecting kids from on line bullying.
Traditional cell biology textbooks say that most cells can only differentiate to the same cell type, with the same function. It seems that some of these textbooks need to be rewritten, thanks to the new results by researchers at the University of Bergen and their international partners at Université de Genève (UNIGE), Harvard Medical School, Universiteit Leiden and the Oregon Stem Cell Center (OHSU).
Cannabis is the most commonly used recreational drug by teenagers worldwide. In Canada, among youth aged 15 to 19 years, the rate of past-year cannabis use is 20.6%, while in England, 4% of adolescents aged 11 to 15 years used cannabis in the last month. While there has been a lot of focus on the role of cannabis use in psychosis, there has been less attention on whether cannabis use is associated with an increased risk of common mental health disorders, such as depression and anxiety.
Reports suggest the number of Catholic women abused by priests in Australia vastly outnumber the survivors of child sexual abuse. As these women find their voice, the leadership of the church will face another crisis of legitimacy.
An experimental drug that bolsters ailing brain cells has raised hopes of a treatment for memory loss, poor decision making and other mental impairments that often strike in old age. The drug could be taken as a daily pill by over-55s if clinical trials, which are expected to start within two years, show that the medicine is safe and effective at preventing memory lapses. Tests in the lab showed that old animals had far better memory skills half an hour after receiving the drug. After two months on the treatment, brain cells which had shrunk in the animals had grown back, scientists found.
Following backlash and criticism over the spread of anti-vaccination rhetoric and sponsored advertisements targeting pregnant women in states seeing a surge in measles outbreaks, Facebook said it may reduce or remove the false information from the platform, according to a statement received by Bloomberg. The social network also said it could decide to demote anti-vaccination content from Facebook search results too.
For millions of sperm it is the end of the road. Scientists have found evidence that the female reproductive tract is shaped in such a way that stops poor swimmers from reaching their goal. Researchers used small-scale models and computer simulations to show that pinch points that behave like gates along the sperm’s arduous path from cervix to egg allow only the fastest ones through. Tests with sperm from men and bulls revealed that the strongest swimmers were most likely to make it through the tight spots, known as “strictures”, while weaker ones were caught in oncoming currents that propelled them backwards when they got too close.
Drinking two or more diet sodas a day is linked to an increased risk of stroke, heart attacks and early death in women over 50, a new study says. The risk was highest for obese and African American women.
Among the goals of the group, called the Academy for Health and Lifespan Research, are to share findings and lobby governments in the United States, Europe, and elsewhere to increase funding and create pathways to approve age-slowing therapies.