Depression affects 5% globally, with prevalence increasing with age, especially in women.
Italian study: 20% of older adults had depressive symptoms, more prevalent in women.
Married men with depression used more medications, while unmarried women living alone were at higher risk.
Women with depression ate less fish, veggies, and healthy fats, with fewer adhering to the Mediterranean Diet.
Mediterranean Diet, particularly fresh fish, linked to lower depression risk.
Fresh fish may reduce inflammation, regulate hormones, and impact gut health, benefiting mental well-being.
Women's higher depression risk may relate to vitamin D deficiency and omega-3 fatty acids.
Despite limitations, study highlights importance of healthy diet for mental health in older adults.