Final answer:
Depression's prevalence indeed varies among different demographics, with factors like gender, socioeconomic status, and other health conditions influencing its incidence.
Step-by-step explanation:
Depression is a complex mental health condition that affects individuals across various demographics, with research showing variations in prevalence. Studies have indicated that the incidence of depression is indeed more prevalent in certain demographics. For example, the lifetime prevalence and age-of-onset distributions of DSM-IV disorders, as reported in the National Comorbidity Survey Replication, reveal significant variations in how depression affects different segments of the population.
Evidence also suggests that women experience depression at higher rates than men. Additionally, factors such as socioeconomic status, race, and illness can influence the prevalence of depression within certain demographics. Major depressive disorder (MDD), characterized by symptoms such as a severely depressed mood and loss of interest or pleasure in activities, exhibits complexity through its gene-environment interactions, contributing to its variability across populations.