Mental health disorders are clinically significant disturbances in an individual's thinking, emotional regulation, or behavior that are associated with significant distress or functional impairment. According to the World Health Organization, over 1 billion people globally are living with mental health disorders, making this a critical public health issue affecting individuals across all ages, socioeconomic backgrounds, and geographic locations.

Defining good mental health remains one of the most complex and nuanced questions in contemporary psychology and public health. There is no singular, universally agreed-upon answer—and this complexity is not a weakness, but rather a reflection of the profound reality that mental health is fundamentally multidimensional and culturally influenced. The World Health Organization offers a foundational perspective: mental health is a state of mental well-being that enables people to cope with the stresses of life, realize their abilities, learn and work well, and contribute to their community. However, this definition alone cannot capture the full spectrum of what good mental health means to different individuals and communities.

Mental health conditions are not being diagnosed and treated at an increasing rate because of improved awareness alone—emerging evidence suggests that overlooked lifestyle and environmental factors may be contributing substantially to their prevalence. While psychiatric medications serve an important role in treatment, a growing body of research demonstrates that addressing foundational health factors alongside pharmacological intervention produces superior outcomes and may even reduce medication requirements over time.