A prospective study of more than 20,000 nurses aged 20-45 years, 88 percent of whom had worked night shifts, reported their most common health issues, disease history, reproductive experiences, occupational exposures, and other lifestyle- and work-related factors.
Scientists have created healthy offspring from genetically infertile male mice, offering a potential new approach to tackling a common genetic cause of human infertility.
Women who have gone through menopause and who have been using a vaginal form of estrogen therapy do not have a higher risk of cardiovascular disease and cancer than women who have not been using any type of estrogen.
Bumblebees are less able to start colonies when exposed to a common neonicotinoid pesticide, according to a new University of Guelph study. Professor Nigel Raine has discovered that exposure to thiamethoxam reduces the chances of a bumblebee queen starting a new colony by more than a quarter. Using a mathematical model, the researchers found that this rate of decline could threaten extinction of wild bumblebee populations.
The origin, development, and characteristics of two types of testicular macrophage have been described by a CNRS team at the Centre d'Immunologie de Marseille-Luminy. To elucidate the nature of these immune cells, the researchers used a novel cell tracing method. Their findings were published on Aug. 7, 2017, in the Journal of Experimental Medicine, and are of fundamental importance. They may help understand certain kinds of infertility in men and find new treatments for them.
Lawrence Livermore National Laboratory scientists have discovered that exposure to environmental levels of triclocarban (TCC), an antibacterial chemical common in personal care products like soaps and lotions as well as in the medical field, can transfer from mother to offspring and interfere with lipid metabolism.
Researchers at St. Michael's Hospital have identified how natural killer cells in the mouse placenta can cause a fetus to fail to grow in the womb or cause miscarriages.
Over a four-year period, new research suggests, a program led by the Johns Hopkins Center for Communication Programs (CCP) in six large Nigerian cities was associated with a 10 percentage- point increase in the use of modern contraceptive methods and a similar increase in the desire of women to have fewer children.
The first few weeks after sperm meets egg still hold many mysteries. Among them: what causes the process to fail, leading to many cases of infertility. But scientists haven't had a good way to explore the biology behind this phenomenon. Now, a new achievement using human stem cells could give researchers a chance to see what they couldn't before, while avoiding ethical issues associated with studying actual embryos.
University of Illinois researchers have developed a way to produce 3-D images of live embryos in cattle that could help determine embryo viability before in vitro fertilization in humans.