Knowledge Pathways

The PEN System is organized by topic into Knowledge Pathways. Browse by practice category, then jump into pathways that feature Recommendation and Evidence Summaries, Backgrounds, Nutrition Care Process steps, Client Handouts and Resources.

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Food Sources and Nutrients

Nutrients, food sources, nutraceuticals, food preparation, food systems and food safety.

Health Conditions

Clinical nutrition topics covering prevention, treatment and therapeutic interventions.

Nutrition Over the Lifespan

Healthy eating issues in youth, during pregnancy, lactation, menopause and in older adults.

Professional Practice

Practice tools, guidelines and methods to support professional skills and development.

Healthy Lifestyle

Healthy living and eating patterns with a prevention and wellness focus.

Pediatrics

Nutrition topics tailored to infants, children and adolescents.