Friendly neighbours may be good for your heart. Researchers have found that bonding well with your neighbours might extend social support network which is linked to lower cardiovascular disease risk. 'Perceived neighbourhood social cohesion could be a type of social support that is available in the neighbourhood social environment outside the realm of family and friends' said researchers from University of Michigan in the US. For the study the researchers tracked the cardiovascular health of over 5000 US adults with no known heart problems over a period of four years starting in 2006. Their average age was 70 and almost