Last week there were several reports in the media that living near a busy road may increase the risk of developing dementia. The Canadian research looked at the medical records of over 6 million people aged between 20 and 85 living in Ontario from 2001-2012. It found that living near a busy road was associated with an increased risk of developing dementia. While this was a large-scale long-term study, it does not provide enough evidence that living near a busy road directly contributes towards the development of dementia and it doesn’t state which aspect of living near a busy road contributes to the increased risk. However, the results do warrant further investigation and research.