Research has found depression overshadows the past as well as the present. It has been known depression makes sufferers see the present and the future as sad, but this is the first time research has shown it also casts a long shadow over people's memories of the past.

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Research has found depression overshadows the past as well as the present. It has been known depression makes sufferers see the present and the future as sad, but this is the first time research has shown it also casts a long shadow over people's memories of the past.