Happiness spreads but depression doesn’t

A study found that the relationship between people’s happiness extends as far as three degrees of separation – to the friends of friends’ friends. The effects were stronger with geographical proximity – a happy nextdoor neighbour increases the likelihood that you will be happy by just over a third. Guardian

James H Fowler and Nicholas A Christakis Dynamic spread of happiness in a large social network: longitudinal analysis over 20 years in the Framingham Heart Study BMJ 2008;337

Having friends who suffer from depression doesn’t affect the mental health of others, according to research. Eureka Alert

E. M. Hill, F. E. Griffiths, T. House Spreading of healthy mood in adolescent social networks The Royal Society 2105



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