Mental health is a state of mental well-being that helps people cope with everyday stresses, recognize and use their abilities, learn and work effectively, build relationships, and contribute to their communities. It is more than the absence of mental illness and exists on a continuum that can change throughout life. Mental health is influenced by interacting biological, psychological, social, and environmental factors, including genetics, life experiences, relationships, socioeconomic conditions, and living environments.
Mental health reflects the interaction of processes that influence how people think, feel, regulate emotions, behave, relate to others, and respond to stress. Protective factors such as supportive relationships, social and emotional skills, safe environments, education, meaningful work, and access to healthcare can strengthen mental well-being, while adversity, poverty, violence, discrimination, and chronic stress can increase vulnerability to mental health difficulties. No single factor determines an individual’s mental health; outcomes develop through multiple interacting influences over time.
Good mental health supports functioning, relationships, learning, productivity, and overall quality of life. Mental health conditions can involve significant distress or difficulties in daily functioning, but many are treatable. Evidence-based care may include psychotherapy, medication, psychosocial support, lifestyle and environmental interventions, or combinations tailored to individual needs and circumstances. Early recognition and access to appropriate, person-centered care can support recovery and reduce the impact of mental health conditions.
Author and reviewer
Editorial responsibilityReferences and further reading
- Manwell LA, Barbic SP, Roberts K, et al. What is mental health? Evidence towards a new definition from a mixed methods multidisciplinary international survey. BMJ Open. 2015;5(6):e007079. doi:10.1136/bmjopen-2014-007079.
How to cite this entry
CNP (2026). Mental Health. In CNP Encyclopedia Editorial Board (Eds.), Encyclopedia of Nutritional Psychology. The Center for Nutritional Psychology.
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