It appears your memory will suffer if you tend to mope around.
U.S. researchers said recently that people who get stressed out or depressed a lot are more likely to develop memory problems than people who have a brighter view of life... and may shed light on early predictors of Alzheimer's disease.
The article published by Reuters cited the study which found people who were frequently anxious or depressed were 40 times more likely to develop mild cognitive impairment, a form of memory loss that falls between normal aging and dementia.