A study in mice suggests a connection between sunlight, estrogen and aggression in male mammals. During short winter days, estrogen prompts male Oldfield mice to be more aggressive, but the hormone decreases aggression during long summer days, says a team from Ohio State University. Oldfield mice are commonly found in the southeastern United States.
Grape seed extract significantly inhibited the growth of colorectal tumors in both laboratory cell cultures and in mice, U.S. researchers report. A team from the University of Colorado Health Sciences Center in Denver says mice given the extract displayed a 44 percent reduction in the size of advanced colorectal tumors.
Exercise alone won’t help you lose weight if you continue eating an unhealthy diet. That’s the conclusion of an Australian review of 43 weight-loss studies dating back to 1985. “Exercise by itself is not going to be an effective weight-loss strategy for an individual, you really need to combine exercise with better nutrition,” review lead author Dr. Kelly Shaw, a public health doctor with the department of health and human services in Tasmania, said in a prepared statement.
When a patient arrives at an emergency room with symptoms of a stroke, doctors must act fast. But the crucial decisions that can prevent death or severe disability are harder to make without a neurologist, and not every hospital has one on call. Starting next month, however, 21 Michigan hospitals will have what is being touted as the next best thing: a robot on call.
A new U.S. study finds that marijuana may help slow the progression of Alzheimer’s disease. Researchers from Ohio State University in Columbus found that marijuana may contain compounds that can slow memory loss associated with Alzheimer’s disease.
Women who carry a common parasite are more likely to give birth to boys, Czech researchers report. In most populations, 51 percent of babies born are male, Dr. S. Kankova of Charles University in Prague and colleagues note. But among a group of women infected with the bug Toxoplasma, 61 percent of babies born were boys.
A trend for children and adolescents to stay up later and sleep less may be linked to rising levels of obesity, according to a review of existing research published on Thursday.
A person who works in the manufacturing of computers has a higher risk of dying of cancer, compared to other people, according to an article published in the journal Environmental Health. In fact, overall death rates (cancer and non cancer) are higher among computer manufacturing workers.
Researchers with the U.S. Department of Energy’s Lawrence Berkeley National Laboratory and the University of California at Berkeley have developed a new technique for Magnetic Resonance Imaging that allows detection of signals from molecules present at 10,000 times lower concentrations than conventional MRI techniques. Called HYPER-CEST, this technique could become a valuable tool for medical diagnosis, including the early detection of cancer.
A Canadian population-based cohort study has revealed that medical induction of labour increases the risk of amniotic-fluid embolism. The study was led by Dr. Michael Kramer, Canadian Institutes of Health Research (CIHR) Senior Investigator from McGill University, and will be published in the October 21st issue of The Lancet.