Objective: To review and systematize all epidemiological studies of seasonal affective
disorder (SAD). Method: The relevant papers were identified by searches in Medline …

This paper reviews research on suicide and attempted suicide among Canadian Aboriginal
peoples (Amer indians, Métis and Inuit). The demographic and cul tural diversity of the …

The operational criteria for seasonal affective disorder (SAD) have undergone several
changes since first proposed in 1984. SAD is currently included as a specifier of either …

Objective: To investigate the seasonal variation in levels of plasmaL-tryptophan and
competing amino acids (CAAs) in healthy humans in relation to climatic variables, total …

Background: Seasonal rhythms in mood and behavior (seasonality) have been reported to
occur in the general population. Seasonal affective disorder, a clinically diagnosed …

A 1-year prospective study of seasonal mood changes was conducted in 250 female Boston
area residents, aged 43 to 72, who were participants in a study of vitamin D …

Seasonal variations in the prevalence of mental disorders in general population surveys
have rarely been noted. Using a representative sample of the Dutch population, the authors …

BACKGROUND: The purpose of this study was to assess how seasonal changes in mood
and behaviour were associated with depression and anxiety symptoms in a sample from a …

A population survey of seasonality in six representative cities in Japan was conducted using
the Japanese version of the Seasonal Pattern Assessment Questionnaire (SPAQ). The …

OBJECTIVE: The prevalence of seasonal affective disorder—as measured by the Seasonal
Pattern Assessment Questionnaire—has been found to be unexpectedly low among …