This here is a story about bees, notoriously hard workers. Older bees, that is, which go and take on responsibilities usually doled out to the younger, stronger bees. When you look at the effects on the brains of these older bees, a picture emerges that could have huge effects for people. Another health breakthrough for dementia, anyone? Continue reading
Health care costs are a top retirement fear, and that’s even though many older workers vastly underestimate how much they’ll have to pay.
“Americans — even those who have diligently saved for their golden years — are not prepared for the reality of health care costs in retirement and don’t really understand how Medicare works,” says John Carter, Continue reading
Qinghua Sun, an assistant professor of Environmental Health Sciences at Ohio State University, says that diesel exhaust has the ability to induce the growth of new blood vessels that serve as a food supply for solid tumors.
The researchers found that in both healthy and diseased animals.
According to them, more new blood vessels sprouted in mice exposed to diesel exhaust than did in mice exposed to clean, filtered air.
They say that this finding indicates that previous illness is not required to make humans susceptible to the damaging effects of the diesel exhaust.
The researchers say that inhaled diesel particles are very tiny in size, which is why they can penetrate the human circulatory system, organs, and tissues.
This suggests that diesel fumes can cause damage just about anywhere in the body, they add.
Diesel exhaust exposure levels in the study were designed to mimic the exposure people might experience while living in urban areas and commuting in heavy traffic.
The levels were lower than or similar to those typically experienced by workers who use diesel-powered equipment, who tend to work in mines, on bridges and tunnels, along railroads, at loading docks, on farms and in vehicle maintenance garages, according to the U.S. Department of Labor.
“The message from our study is that exposure to diesel exhaust for just a short time period of two months could give even normal tissue the potential to develop a tumor,” said Qinghua Sun, senior author of the study.
“We need to raise public awareness so people give more thought to how they drive and how they live so they can pursue ways to protect themselves and improve their health. And we still have a lot of work to do to improve diesel engines so they generate fewer particles and exhaust that can be released into the ambient air,” Sun added.
A research article on the study, supported by Health Effects Institute awards and grants from the National Institutes of Health, has been published in the online edition of the journal Toxicology Letters.