. . "Elders are disproportionally impacted by insomnia, with up to 57% affected (higher incidence observed in women).4,6 Although primary insomnia may be linked to age-related changes, the majority of insomnia in elders is secondary to comorbid conditions, especially coronary disease, dementia, arthritis and other musculoskeletal disorders, chronic pain, and psychiatric disorders, including depression." . .