Treating sleep problems with cognitive-behavioral therapy for insomnia can reduce suicidal ideation, according to a US study of more than 300 outpatients between aged 18 and 88 years. About 21 percent of participants reported having suicidal thoughts or wishes during the past two weeks. Group cognitive-behavioral therapy for insomnia produced a statistically significant post-treatment reduction in suicidal ideation. Treatment sessions were conducted weekly until the final two sessions, which were conducted bi-weekly.
Read more at American Academy of Sleep Medicine