Daily low-dose aspirin is not a panacea for the elderly
sciencenews.org – Healthy elderly adults don’t benefit from a daily dose of aspirin, according to results from a large-scale clinical trial.
Source: John J. McNeil, et al. Effect of Aspirin on Cardiovascular Events and Bleeding in the Healthy Elderly. New England Journal of Medicine, 2018.
Humans arrived on Madagascar 6,000 years earlier than previously thought — so then what killed the elephant bird?
zmescience.com – The story of the elephant bird's extinction just got a lot more interesting.
Source: James Hansford, et al. Early Holocene human presence in Madagascar evidenced by exploitation of avian megafauna. Science Advances, 2018.
Songbirds may avoid obesity by regulating energy use
upi.com – Songbirds living near bird feeders have access to an unlimited supply of food, and yet, they never seem to gain weight.
Source: Lewis G. Halsey. Keeping Slim When Food Is Abundant: What Energy Mechanisms Could Be at Play?. Trends in Ecology & Evolution, 2018.
You should check how much sugar your 'healthy' yogurt really has
popsci.com – Researchers found that many varieties of yogurt were absolutely packed full of sugar. We did a little more digging to unmask the worst culprits.
Source: J Bernadette Moore, Annabelle Horti, Barbara A Fielding. Evaluation of the nutrient content of yogurts: a comprehensive survey of yogurt products in the major UK supermarkets. BMJ Open, 2018.
BPA and Its Replacements Have Same Effects on Mice
the-scientist.com – The plastic ingredients BPS and diphenyl sulfone cause chromosomal abnormalities, and the effects can last for generations.
Source: Tegan S. Horan, et al. Replacement Bisphenols Adversely Affect Mouse Gametogenesis with Consequences for Subsequent Generations. Current Biology, 2018.
Volcanoes on dwarf planet ooze ice instead of molten lava
zmescience.com – Ceres just got a heck of a lot more interesting to researchers.
Source: Michael M. Sori, et al. Cryovolcanic rates on Ceres revealed by topography. Nature Astronomy, 2018.
Scientists Just Made Human Egg Cells from Human Blood for the First Time
vice.com – It’s the first step toward being able to mass produce human eggs using other people’s body tissues or blood.
Source: Chika Yamashiro, et al. Generation of human oogonia from induced pluripotent stem cells in vitro. Science, 2018.
The Gut of Mice Communicates with the Brain Through the Vagus Nerve
the-scientist.com – The researchers who made the discovery suggest the signaling may form a sixth sense.
Source: Melanie Maya Kaelberer, et al. A gut-brain neural circuit for nutrient sensory transduction. Science, 2018.
Chemists find better way to manipulate 3D structure of molecules
upi.com – Scientists have developed a more efficient and effective way to manipulate the 3D structure of molecules.
Source: Shibin Zhao, et al. Enantiodivergent Pd-catalyzed C–C bond formation enabled through ligand parameterization. Science, 2018.
Why do people share? It's contagious, six-year study of Hadza people shows
sciencedaily.com – In the modern world, people cooperate with other people including strangers all the time. We give blood, tip providers of various services, and donate to charity even though there is seemingly nothing in it for us. Now, researchers who've studied Hadza hunter-gatherer people in Tanzania over a six-year period have new and surprising insight into why people work together.
Source: Kristopher M. Smith, Tomás Larroucau, Ibrahim A. Mabulla, Coren L. Apicella. Hunter-Gatherers Maintain Assortativity in Cooperation despite High Levels of Residential Change and Mixing. Current Biology, 2018.
