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New look at prolonged radiation exposure: At low dose-rate, radiation poses tiny risk to DNA, study suggests

ScienceDaily (May 15, 2012) — A new study from MIT scientists suggests that the guidelines governments use to determine when to evacuate people following a nuclear accident may be too conservative. The study, led by Bevin Engelward and Jacquelyn Yanch and published in the journal Environmental Health Perspectives, found that when mice were exposed to radiation doses about 400 times greater than background levels for five weeks, no DNA damage could be detected. Current U.S.

Toronto study links breakfast with school success

A study released Friday by the Toronto District School Board, shows that giving kids a nutritious breakfast each morning has a direct effect on their academic performance. The two-year study, Feeding Our Future, followed 6,000 Toronto students. It found those who were fed properly had improved marks and better behaviour. “This is a groundbreaking piece of research,” stated Catherine Parsonage, co-chair of the Canadian Child and Youth Nutrition Program Network. Parsonage is also the executive director of the Toronto Foundation ...

Losing weight when obese can prevent or cure diabetes, whatever the initial BMI, study suggests

Addressing diabetes is a major priority for health providers worldwide given the vast global prevalence (approx. six to seven per cent of the world’s population; around 285 million people) and its severe complications including amputations and heart disease. Surgery for weight loss has an unexpectedly rapid and substantial therapeutic effect on diabetes rates. Understanding why weight loss has such a dramatic effect on diabetes is the focus of this study by Associate Professor Markku Peltonen from the National Institute for ...

Study links genes to common forms of glaucoma

ScienceDaily (Apr. 26, 2012) — Results from the largest genetic study of glaucoma, a leading cause of blindness and vision loss worldwide, showed that two genetic variations are associated with primary open angle glaucoma (POAG), a common form of the disease. The identification of genes responsible for this disease is the first step toward the development of gene-based disease detection and treatment. About 2.2 million people in the U.S. have glaucoma. POAG is often associated with increased eye pressure but ...

For Paul’s Believers, a Study in American Optimism

Darryl Williams and Benjamin Kline were shivering before the speech even started, their black umbrella no match for the steady rain and brisk Philadelphia wind. Even as water hit their faces, though, they were smiling, excited at the thought of seeing Ron Paul. Williams and Kline are true believers. They are two men who in spite of political reality and weather still come out to support their “ideal candidate.” They do not care that many have crowned Mitt Romney the ...

Anxiety increases cancer severity in mice, study shows

ScienceDaily (Apr. 25, 2012) — Worrywarts, fidgety folk and the naturally nervy may have a real cause for concern: accelerated cancer. In a new study led by researchers at the Stanford University School of Medicine, anxiety-prone mice developed more severe cancer then their calm counterparts. The study, published on-line April 25 in PLoS ONE, found that after hairless mice were dosed with ultraviolet rays, the nervous ones — with a penchant for reticence and risk aversion — developed more tumors ...

Study points to potential treatment for stroke

ScienceDaily (Apr. 24, 2012) — Stanford University School of Medicine neuroscientists have demonstrated, in a study published on-line April 24 in Stroke, that a compound mimicking a key activity of a hefty, brain-based protein is capable of increasing the generation of new nerve cells, or neurons, in the brains of mice that have had strokes. The mice also exhibited a speedier recovery of their athletic ability. These results are promising, because the compound was not administered to the animals until ...

Memory loss with aging not necessarily permanent, animal study suggests

ScienceDaily (Apr. 2, 2012) — Scientists from the Florida campus of The Scripps Research Institute have shown in animal models that the loss of memory that comes with aging is not necessarily a permanent thing. In a new study published this week in an advance, on-line edition of the journal Proceedings of the National Academy of Science, Ron Davis, chair of the Department of Neuroscience at Scripps Florida, and Ayako Tonoki-Yamaguchi, a research associate in Davis’s lab, took a close ...

Prolonged fructose intake not linked to rise in blood pressure, study suggests

ScienceDaily (Feb. 13, 2012) — Eating fructose over an extended period of time does not lead to an increase in blood pressure, according to researchers at St. Michael’s Hospital. A new study has found that despite previous research showing blood pressure rose in humans immediately after they consumed fructose, there is no evidence fructose increases blood pressure when it has been eaten for more than seven days. In fact, researchers led by Drs. David Jenkins and John Sievenpiper observed a ...

Inherited risk factors for childhood leukemia are more common in Hispanic patients, study finds

ScienceDaily (Jan. 30, 2012) — Hispanic kids are more likely than those from other racial and ethnic backgrounds to be diagnosed with acute lymphoblastic leukemia (ALL) and are more likely to die of their disease. Work led by St. Jude Children’s Research Hospital scientists has pinpointed genetic factors behind the grim statistics. Researchers studying a gene called ARID5B linked eight common variants of the gene to an increased risk of not only developing pediatric ALL but of having the cancer ...