Mental health defined as the state of emotional, cognitive, psychological, social, and spiritual well-being of individuals. In this sense, older adults, as time goes by, experience situations related to disconnection, abandonment, loss, and, consequently, the disintegration of their social core. Therefore, the objective of this article is to define the importance of mental health in this age group, describing intervention guidelines from a Psychogerontological perspective, with the goal of promoting healthier environments. Finally, the article reflects on the importance of integrating personnel trained in mental health to address the needs of older adults and their families, and to develop strategies for prevention, promotion, and education related to mental health in old age.