Vitamin D is an essential steroid hormone that plays a role in calcium and phosphorus regulation and has the potential to affect sleep quality. Vitamin D deficiency in the elderly often occurs due to minimal exposure to sunlight and age-related physiological changes, which contribute to the high incidence of sleep disorders, including insomnia. This community service activity aims to screen vitamin D levels in the elderly as a cause of insomnia through the Plan-Do-Check-Act (PDCA) approach. The activity was carried out at Panti Bina Bhakti, South Tangerang, involving 93 elderly participants aged > 65 years. The results showed that the average vitamin D levels among the age groups 61-70 years, 71-80 years, 81-90 years, and 91-100 years were 7.6 mg/dl, 7.2 mg/dl, 7.6 mg/dl, and 13.9 mg/dl, respectively. Interventions through vitamin D supplementation, sunlight exposure, and education in the form of sleep hygiene are effective in improving the health and sleep quality of the elderly.

Insomnia affects 30-50% of the adult population in the United States, with 5-15% experiencing chronic symptoms. Insomnia is characterized by dissatisfaction with the quality or quantity of sleep, insomnia presents challenges such as difficulty initiating, maintaining, and waking early, and is common in older adults. The Hana Nursing Home hosted this activity, with 61 participants in attendance. In this activity, there were 9 elderly people with mild and moderate insomnia respectively (14.75%) and 5 people (8.2%). Therefore, comprehensive clinical evaluation in the form of education and early detection is essential for effective clinical management of insomnia.
Keywords: Insomnia, Education, Early detection