Severe Anorexia Nervosa Is in Medicine / Internal Medicine — 14yo Child | Endocrinology | SMLE Q#757
SMLE Question #757
Medicine / Internal Medicine
Endocrinology
Last updated: February 2026
A 14-year-old girl with severe anorexia nervosa is admitted for monitored enteral feeding after weeks of minimal intake and significant weight loss. She is started on slowly advancing feeds. On hospital day 3, she develops new generalized electrolyte abnormalities on routine blood tests. She has no vomiting, diarrhea, or diuretic use, and samples are repeated with similar results. What is the most likely explanation for these electrolyte abnormalities?
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