Physical activity and mental health in the United States and Canada: Evidence from four population surveys

The Epidemiology of Nonspecific Psychological Distress in New York City, 2002 and 2003

“…Other correlates of NPD observed in this study that have been documented elsewhere include gender, 3,19,22 19,30,32 We also found higher rates of NPD among individuals whose telephone service had been interrupted for more than 24 h in the past year. We hypothesize that this variable is a marker for financial or personal disorganization that is independent of income.…”

Its Fun: A Practical Algorithm for Counseling on the Exercise Prescriptions: A Method to Mitigate the Symptoms of Depression, Anxiety, and Stress-related Illness

“…The study found that the more physical activity the study participants reported, the fewer symptoms of depression they reported. The opposite was true as well: the more physical inactivity reported, the more depressive symptoms the subjects reported [6,7]. The effects of this study were duplicated in 2006 when a national study comprised of 5451 men and 1277 women found that subjects in the insufficiently active category reported more depressive symptoms than those in the sufficiently active category [8].…”

Increased mortality in depressive disorders: A review

“…It has been shown repeatedly that patients with depression more often drink too much alcohol [34][35][36][37], although there are indications that this is not true in elderly subjects [17•,38]. There also is some evidence that problem drinking has a negative effect on prognosis of depressive disorder.…”