This collection consists of phenotypes for patients with conditions related to nutrient imbalance, metabolic processing, and energy regulation. Disorders range from obesity and failure to thrive to inborn errors of metabolism (e.g., maple syrup urine disease). Phenotype logic may include growth measures (e.g., BMI z-scores), lab results (e.g., lipid panels, glucose levels), dietary supplementation, and nutrition consults. Diagnosis codes and clinical monitoring are key data sources. Example phenotypes may include “Pediatric Obesity,” defined by BMI percentile thresholds over time, and “Hypoglycemia,” identified through lab values, clinical presentation, and treatment with dextrose or dietary interventions.