Dementia rates ‘higher near busy roads’
People who live near major roads have higher rates of dementia, research published in The Lancet suggests.
Up to 11% of cases of dementia in people who live within 50M of the main road could be down to traffic, the study suggests.
Researchers who followed nearly 2M people in Canada more than 11 years, said,
say air pollution or noisy movement can contribute to a reduction in the brain.
He dementia experts in the United Kingdom results need investigation but it was “reasonable”.
Nearly 50 million people worldwide have dementia.
However, the causes of the disease, which robs people of their memory and brain power, and incomprehensible.
The study in The Lancet was followed by nearly two million people in the Canadian province of Ontario, between 2001 and 2012.
There are 243,611 cases of dementia diagnosis and during that time,
but the greatest danger to those living closest to major roads.
300M compared with those who live far away from the main road was a danger:
7% higher within 50M
4% higher between 50-100m
2% higher between 101-200m
The analysis can be caused by 7-11% of cases of dementia within 50M of the main road by traffic.
The researchers adjusted the data to account other risk factors such as poverty, obesity, and levels of education, smoking, and therefore this is unlikely to explain this relationship.
Said Dr. Hong Chen, of the Health Ontario public and one the authors of the report: “increasing population growth, urbanization and developed many close to the heavy traffic, and with exposure to a wide range of traffic and increased dementia rates, and even a modest impact from near -road exposure can pose a significant burden on public health.
“There is a need for more research to understand this link, particularly in the effects of various aspects of the movement, such as air pollutants and noise.”
The researchers point to the hype, and the nanoparticles, can participate nitrogen oxides and particulate matter from tire wear.
However, the study only look to where people with dementia live. Can not prove that the roads that cause disease.