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Explore clear, research-informed definitions of key concepts connecting nutrition, mental health, behavior, and psychological well-being.
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Nutritional psychology examines how dietary patterns, nutrients, food-related behaviors, and psychological factors interact with mental health and well-being. Launched by the Center for Nutritional Psychology in 2024, the Encyclopedia of Nutritional Psychology defines the terms, mechanisms, processes, and research areas shaping this growing field.
Created for students, educators, researchers, healthcare professionals, and curious readers, the ENP includes hundreds of clear, research-informed entries. Content is written and regularly updated by contributors across relevant scientific disciplines, with new entries and major revisions reviewed by the CNP Encyclopedia Editorial Board before publication.
The encyclopedia helps readers understand terminology and foundational concepts. For deeper exploration of the studies behind those concepts, visit the Nutritional Psychology Research Library .
Select a term to read its definition and supporting context.
Phytochemicals are bioactive, non-nutrient compounds naturally produced by plants as part of their secondary metabolism, primarily serving protective functions for the plant such as defense against pathogens, ultraviolet radiation, and…
Plant-based diets include a variety of eating patterns that prioritize plant-derived foods, ranging from fully plant-exclusive diets like veganism to those that include some animal products, such as vegetarian or…
A transient emotional state resulting from the satisfaction of a desire or a craving (as opposed to happiness, which refers to a lasting emotional state of contentment) (Gros, 2020).
A common endocrine disorder in women of reproductive age, marked by irregular menstrual cycles, excess androgen levels, and polycystic-appearing ovaries. It is often associated with insulin resistance, metabolic disturbances, and…
Polyphenols are a diverse group of naturally occurring compounds found in plants, characterized by the presence of multiple phenol groups. They have antioxidant properties and are known for their potential…
The increase in reward value of a stimulus based on its potential to move the body’s physiological state toward homeostasis (Simmons & Deville, 2017); an increase in pleasurable sensations associated…
PDIEs are factors influenced by dietary intake that are associated with healthy psychological functioning and positive well-being. They include positive psychological processes, including feelings of happiness, optimism, contentment, and life…
A subjective conscious sensation of pleasure and joy experienced after eating (Duerlund et al., 2019).
The subjective perceptions of the body after eating (Duerlund et al., 2019).
Interoceptive physiological sensations arising from the post-ingestion and absorption phase of the preceding food intake that leads to positive sensations (i.e., energy stability, satiation, comfort, etc.) or negative sensations (i.e.,…
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